First Microsoft with Surface Pro 4, now HP with Z...
Now with HP Z ? HP has been running targeted sales campaigns against the new Mac Pro since it came out. Here is an article from 2014
http://www.computerdealernews.com/news/hp-guns-for-mac-market-with-latest-z-workstation-line/36295
Back when Apple was in update drift the last time ( 2011-2013) they were running the "are they dead" stuff through back channels. The 2012 release of "it is still alive" update was move to triage the situation.
Apple's "delight and surprise" approach to communicating about their upcoming products works when they actually so movement on a semi-regular basis. This "rip van winkle" show up every 3-4 years with something is a golden FUD opportunity for their sales competitors to beat the crap out of Apple's sales relationship with many of their customers.
Surface Pro 4 hammering on iPad is useful given that it looks like Surface Pro 5 isn't coming until 2017. (not quite as refresh lull as most of Apple's Mac line up but not on yearly pace either. )
it's like the Apple Airplane co. was shot in the sky with a slingshot of Apple brand when Tim became a skipper, and was calculated to stay in the sky as long as he gets his stock bonus... but now the plane is stalling. Time to take the golden parachute?
Apple's stock was hyperinflated more so on expected iPad growth than anything in Mac. New Mac Pros (or even new MBP ) wouldn't change the overall effect much.
Apple has more cash on hand than Microsoft and HP combined. Microsoft wrote off a ~$8B loss getting pummeled in that cellphone market by "shot out of the sky" Apple. HP was sold off as a drag on profits. Apple can laugh off that $14B revised tax bill if it does come down to paying it in a year or two with no impact on operational investment constraints or debt issues or acquisition opportunities. So "falling out of the sky". Hardly.
The reality is that HP (and Dell , Lenovo/IBM ) had a much larger share than Apple in the workstation market back when Jobs was CEO too. Apple is smaller now, but it never was a major player in terms of numbers.
It isn't running the company that Apple is failing at as much as R&D. Ive's design group maniacal focus on the anorexic products has lead to overheated laptops and likely Mac Pros. The major "thin as possible" has Jobs connections also. The problem Apple seems to have is when to stop adding constraints to a specific release and let the technology catch up.
Again this has been set up in the Jobs era. Apple runs all of its industrial design through a relatively small group. It is a fixed sized group so it is a choke point. Everything screening through Jobs made sense for a much smaller company with a much smaller product mix. With macOS , iOS , tvOS and a diverse ecosystem in each one, funneling all of that through 1-2 people is going to run into problems.
Selling "last years" iPhone with more hobbled features.... straight out of the Jobs era. Apple sat too long on that strategy before getting to the iPhone SE ( smaller phone, lower price, current stuff). That whole "sell older stuff and crank the RDF field as an innovative company"... straight Jobs. That has leaked into the Mac division. "If I were running Apple, I would milk the Macintosh for all it's worth — and get busy on the next great thing." -- Steve Jobs.