Who said they were based on facts? The problem is no one has any facts because Apple hasn't seen fit to provide any form of guidance.
There are several fact around for people with even marginal critical thinking skills.
1. Apple's past behavior.
Apple has not picked WWDC once in the entire span Mac Pro ( Intel based) product existence for a truly new device available for order. It his right there plain as day in the buyers guide:
https://buyersguide.macrumors.com//#Mac
Dec 2013
Jun 2012 ( really a speed bump. the Model 5,1 mac became the Model 5,1 mac. All their competitors were launching new designs.... Apple had nothing. )
Jul 2010
Mar 2009
Jan 2008
Apr 2007
So given Apple's decade long track record of not producing a Mac Pro at WWDC what is the huge motivation to lead to it happening this year? The track recored is a fact. The pattern of non June is a fact. Inference off of those two facts and have high expectations of a Mac Pro at WWDC..... only if you are smoking something.
2. Apple's release policy of decoupling products from 'fixed in time" trade shows.
Apple formerly backed out of feeling obligated to do something "exciting" for MacWorld in 2009 but the decoupling policy was already running at that point.
http://www.apple.com/pr/library/2008/12/16Apple-Announces-Its-Last-Year-at-Macworld.html
WWDC has a relatively fixed schedule but it primarily suppose to be about the devlopers and their relationsihp to Apple's interfaces. If relevant products are ready? Great. if not, no big deal. The "must have" drop here is new Beta Software, not finished product.
iPod being a holiday season skewed device created a defacto fixed window event for Apple to hit. So they could 100% get rid of a yearly product event. Then need to have something lined up for the Holiday buying season. But that has been iPods and now iOS/iPhone. Macs at what is the premier annual iOS event. Why? With a limited (< 2hr ) budget why spend time on that. If didn't have 2hrs of material, needed filler, and Mac happened to be ready ... then maybe, but how likely is that they don't have iOS material when it is the order of magnitude larger segment of their business?
Having said that I think you misunderstand what those lines in the sand were. It goes something like this:
May 2016:
Q: I want to buy a Mac Pro but the current offering is dated and not even discounted. Should I buy or wait until Apple releases a new version?
A: No one knows when (or if) Apple will release a new Mac Pro. However WWDC is right around the corner so I would wait until after that to see if there's an announcement.
As pointed out above everyone could now what the history of Mac Pro release are. Apple doesn't target WWDC. WWDC isn't made or broke on a Mac Pro.
The only thing that would sync the Mac Pro up with WWDC is the the product was ready to go.
Intel Xeon E5 1600 v4 release did line up with WWDC. However, 1600 v4 had slipped a couple of times already. ( you can find folks points at intel's old roadmaps last fall of v4 arriving in Q4 15 when it did. ). The GPUs were up in the air at that point too. No big rumbles out of NAB.
In contrast for several years (until last two ) Intel would announce new laptop solutions a a week or two before WWDC. And surprise , surprise, surprise new Mac laptops would come around WWDC. WWDC wasn't the real trigger there. It was was the earlier show coupled with Intel marking that as a volume release point. At that point Apple had what they needed and so released.
Apple buys a relatively narrow subset of the Intel, AMD, and Nvidia catalog. If there are no updates to those parts in a certain part of the year the likelihood of a new Mac release is quite small. They aren't going to 'save' releases for an extended period of time to make a bigger splash at the two relatively fixed events they hold.
July 2016 (with no announcement of a new Mac Pro at WWDC):
Q: I want to buy a Mac Pro but the current offering is dated and not even discounted. Should I buy or wait until Apple releases a new version?
apple doesn't discount based on time. It is like expecting IBM to come out with a new flying car announcement. They haven't done it so why expect it now? There have been very few exceptions where Apple has reset ( iPhone drop after ~3 months ). It is not something "normal" to be waited on. Why? because it hasn't happened. There is a decade long track record to back that up.
A: No one knows when (or if) Apple will release a new Mac Pro. However the new iPhone launch is right around the corner so I would wait until after that to see if there's an announcement.
That is clueless answer. Why is going to spend 30 seconds talking about Macs at an designated iPhone event?
A: No one knows when (or if) Apple will release a new Mac Pro. However October is right around the corner so I would wait until after that to see if there's an announcement.
Chuckle. That is actually the one after the two strawman likely to fail that actually has some basis to it. What a shocker... it is being set up to fail. *cough*. Let's look at the factual track record in the buyers guide (search for 'Oct ' on the mac buyers guide page.)
2015 new Mac in October? Yes.
2014 new Mac in October? Yes.
2013 new mac in October? Yes.
2012 new Mac in October? Yes.
2011 new Mac in October? Yes.
2010 new Mac in October? Yes.
2009 new Mac in October? Yes.
2008 new Mac in October? Yes.
The same Mac product every year? No. Some Mac Product .... the track record speaks for itself.
This year may be a bust. Timing wise for the Intel updates the most nature fit is the MacBook but it was bumped not all that long ago. However, the MBP could go without waiting for gen 7 chips since two behind. ( and the gen6 quad Iris Pro the MBP uses, while announced by Intel in Q1 '16, have been extreme rare in the wild. Few others had them either. )
Even if Apple had a dismally small team doing Macs they could slap a gen 7 into the MacBook ( pin compatible) and just release something with minimal effort. Probably not since several relatively creditable leaks on Macrumors for anyone bothering to look that new MBP enclosures are showing up with pictures. Kuo has tagged them as coming. etc.
The difference is at no point in Apple's past have they had a "No buy" recommendation for all of the Macintosh products.
Including now. The MacBook is at Neutral which is not a "No Buy". It means that it is out. Buy if you need it.
People are, rightly so, concerned about Apple's commitment to the platform. It's not just M.R. where this is happening. It's happening all over the web.
OK move the goal posts off the Mac Pro... chuckle. OK Mac wide.
1. As a horrible sky is falling thing, is in large part a tech spec porn crowd thing...... Sales of Macs have not cratered permanently.
https://www.macrumors.com/2016/08/10/mac-notebook-sales-2q16-trendforce/
Off in Q1, but back on track in Q2 in laptops. In another macurmors article... Down about 600K units in Apple's Q3 results. yes more people are waiting on a refresh. If decent one comes in October Apple will be made whole rather quickly.
2. When Intel gets off of the hiccup trail and actually hitting their roadmaps. And AMD is largely hitting their roadmaps on time ( has yet to happen since Zen is now largely being positioned as a 2017 thing. ) then Apple having hiccups will be much more significant. Now, it is partially a tempest in a teacup.
Users are also buying at slower frequencies which means Apple is going to update slower. It isn't just a unidirectional event.
There should be some concerns.
a. I think Macs should get a reasonable set of dedicated product design resources. Ive's crew is a choke point. Not just on Macs but I think there are signs it is a choke point on
all of Apple's line up. The print money aspects of the iPhone has somewhat papered over this .... but the iPad has been jacked up too. Just look at the iPad mini 2 sitting in the line up.
With the iPad repricing at the iOS event it looks like Apple is lining up to roll through Holiday season with no more revisions. Apple TV is about to get rolled past by with 2nd generation 4K capable units from its competitors.
Airport ... again being pasted up. Apple Home still largely stumbling around. Apple Music still working to get the interface right.
It would be nice when Ive and his crew roll off to their new Spaceship design lab that someone else given space on the old one so Apple isn't so "Univisioned".
I don't see this as a Mac issue. It is can Apple walk and chew gum at the same time issue.
b. The Mac Pro is being held up as much due to software issues than it is new hardware refresh. The reboot in compute API from OpenCL to Metal is something have to address before follow on to the inital version is going to get traction. Also in context where push more computation down to the GPU are the design constraints going to work? [ Not that have to go back old form factor. But doesn't look like rigorous thought has been put into the entire scope of what need to make this work. ] Hiding in the slush fund of iOS gaming is a poor view onto the world of cross platform computation. or cross platform graphics. Apple seems to be buying their head in the sand (or money pit coins) on this one.[/quote][/quote]
.c Apple should pick AMD and give them shot at integrated CPU. Like the revise the classic MBP if going to keep that around much longer. Or take Mac Mini off by itself instead of being MBP "hand me down" parts.
[ iPhones split modems between intel and Qualcomms. Tooooo long on one vendor and really don't have a two vendors competing. ]