Looks rather explicit to me.
It does leave a lot unanswered as to what exactly that Mac Pro will be, but it's the words "new", "Mac Pro", "later next year."
If you don't want to wait a year, and you need 16 cores now, by all means, jump off the train. If I were in that spot, I would too after what Apple released today.
If you're not, Apple has already told you what they are doing. The timing isn't secret. Keep chugging on your current machine and there will be new ones next year.
The best guesses I've seen is that Apple is either running into Thunderbolt issues, or the Mac Pro is getting a ground up redesign possibly to fill the XServe spot as well. But Apple has told you when it's coming. Either wait or move on.
Myself, I'll stay calm, replace my MBP this year instead, keep my current Mac Pro running, and sanely re-evaluate again when Apple updates next year.
I've been supporting your point of view that the Mac Pro will not be discontinued and will be updated, but I don't think I can keep beating the drums any more. The writing is on the wall. I am not going to wail or jump everything to Windows as if that's going to spite Apple in some way. I am going to buy the new high res MBP, because it looks pretty damn good and re-evaluate my workflow and computing requirements to see what I can do.