Does anyone think that even if Apple decide not to deliver a new update to the current MacPro on the 27th October, that this could be the end for the MacPro or could November delivery a surprise update...?
Even if Apple as going to deliver in November (or maybe early December) they would announce in October. The notion of Apple 'hiding' something into 'mid-Nov-December' is largely delusional. They have never done that, nor does it make much rational sense to do so.
It is extremely unlikely there is any "November" surprise coming. Even less likely that there is a "December" surprise coming.
If this a pure laptop refresh then a desktop oriented refresh would far more likely arrive in 2017. New CPUs for iMac and Mini in that timeframe.
I have a MacPro 2 x 2.93 GHz 6-Core Intel Xeon Mid 2010 with 500GB SSD plus 64GM RAM with QTY 3 x 3TB internal drives running macOS Sierra. It's still a great machine....
The catch-22 is the number of folks saying that Mac Pro 2010 is still reasonably OK, takes the pressure of off Apple to deliver something new. Yes, there are some folks bolting for Windows. But a number of folks sitting on 2010-2013 Mac Pros aren't likely to move much in the next 6 months ( Users are generally squatting on the same machine for longer periods of time than in the past. That trend started years before the Mac Pro 2013 arrived. That general trend is not going to promote yearly updates of a Mac Pro. )
While there are several Windows laptops matching and surpassing the Mac laptops on build, thinness, screens, etc., the iMac and Mac Pro are unlikely to get a veiled admission of defeat from Apple. The iMac is solid and few have executed something better than the Mac Pro in its space [ Boxes with slots continue but Apple clearly doesn't want to go there. ] The Mini is riding on laptop parts. Depending upon how fluild those parts are available it could go with them or later (with iMac ).
The Mac Pro is obviously on a not high priority schedule.
... so a new machine would be a great boost to my graphic design / web design / large format design business. ...
if Apple is on an approximately 3 year cadence ( 2010 -> 2013 ), the Mac Pro really wasn't widely available until 2014. Plus 3 on that is early 2017. If there is nothing by March 2017 then I wouldn't hold my breath ( especially if the rest of the desktop line up completes a refresh by that time). At that point, it is has fallen into the probably will be (or has been) canceled category.
It certainly would improve relations with the Mac Pro market to release a bit sooner than every 3 years, but I don't expect Apple to do that.
[ The 2012 Mac Pro was more of a "not dead" release than anything substantive... so yes 2010 -> very late 2013 is bit more than 3 years. ]
If Apple is on a 3 year cycle then the remaining Mac Pro customers are likely going to put some thought and effort into synching up with the Mac Pro cycle. On 3 or On 6 ... instead of On 4 or On 5 year cycles.