Hong Kong received the update on 27th April(last friday).
Having used it three days my impressions are...
1) Battery life
I think it's decreased, though I might be playing with it more, but the battery feels like it's falling a lot faster, specially during voice calls. I've gone through a battery cycle and it will hopefully improve.
2) Home screen
Loving it, the new dock and ability to remove home screens is brilliant. But its disappointing to see that when you remove a homescreen, the "helicopter view" simply removes a screen and it seemingly is still set up for 7 home screens, making it look awkward. The carousel also feel funny. Pity to see HTC so behind samsung at this when HTC invented the helicopter view. Samsung reanimates the helicopter view to match how many homescreens you have.
The wifi signal is clearly wrong, as others have mentioned. I'm not receiving some of my texts, and this led to a highly irate gf which you can imagine was not nice...
Positive view overall, but there clearly are bugs which I hope HTC will sort out soon