I think that Microsoft is trying to be unpredictable. If there is a common perception among people that Microsoft will make a phone next year, trust me they will not. On the contrary, if people start believing that Microsoft will never make another Windows phone, they may surprise you and that's their end game. They don't want to become predictable as it helps to remove the preconceived bias. I mean look at what happened to Lumia 950 and Lumia 950 XL. By the time of its launch, people had already developed a mind set that it's not a good phone and has average looks. Sure there were problems in the software but look at it now. It works perfectly but no one cares. The dame is already done.