I do not work for VMware, but here is my opinion.

It doesn’t appear to me that Fusion is going to be deprecated. It does look like they are looking at ways to make it more valuable in todays development environment. Those environments and paradigms tend to be more Linux focused. 
It also appears that VMware is keeping an eye on what Microsoft is doing, so Windows on Mac is not entirely off the table. 
You might want to take a look at a recent VMware Community Podcast https://youtu.be/FiPanHfpY6g . Michael Roy @Mikero (Fusion/Workstation project manager) has very nice things to say about the M1 Macs as well as giving insights on where he thinks Fusion is going. There are also some nice nuggets of information there about Windows.