So Apple announced the all new iPad Pro. With optional keyboard and 'pencil' you can have a system that looks like a laptop.
In order to convince people you can do real work on an iPad Pro, and not just watch movies or play music, they recruited Microsoft to demonstrate iPad Pro running Microsoft Office.
However what it really looked like was a Microsoft Surface Pro 3.
The interesting thing here is that when Steve Jobs first introduced the iPhone he comprehensively dismissed the 'stylus' or any kind of pointing device in favour of the finger. He also comprehensively made Apple a product of the premium consumer. A product bought as much for fashion than as technology.
So why would Apple want to park the iPad onto Microsoft's home ground of productivity and usefulness as a PC? One answer - sales. Ipad sales have been in decline. Once people buy an iPad they tend not to go on a binge of annual upgrades. Apple is now into the guerilla tactics of taking the iPad into the office and into the enterprise.
If they are successful then Microsoft wants to sell it's services and software so it needs to join the party.
The interesting thing is that Apple have produced something like a Microsoft Surface Pro 3. A tablet that can be a laptop, Yet the Apple watchers are content to cheer in wave the 'innovation' of a product that is really someone else's idea. The tech press are loath to point this out because of Apple's reputation for closing the door on press contacts to any critical journalism.