ok,everybody please pay attention:
there is no new UI. i cant read the page now,but you must have misunderstood it.it may have said there were some "changes" to the ui,but it is the same sense 2.1 that weve always had,and we have been saying for months that it would not change. htc only updates the OS,never sense versions. they use new sense to entice you into new device.
sorry but if you want 3.0 or 3.5 eye candy,your best bet is to root.
no i dont believe you shoudl be concerned. the last leak ran quite well for me,its only real issues are gtalk and the VM notification bug. hang tight,im sure there will be patches and another "official" ota shortly.
it may be technical difficulties,it may be that someone flipped the switch before they should have. im sure before the end of the day more info will surface... keep eyeballs peeld on twitter and on the forums
as for going backwards to mr2,sorry,not without rooting. again,just be patient. you are still getting VMs,just not notifications and im sure a fix will appear soon. in the meantime... if you get a phone call... give it 5 min,then check to see if you have VM. thats what ive been doing on the leak sense roms and it works fantastically