What Phone OS Are You Most Excited About Now?S

So this iPhone OS 3.0 was unveiled today (have you heard of it?), and since it's not the only new/updated OS launching this year, I wonder: which upcoming OS are you looking forward to most?

The WebOS announcement for the Palm Pre started the year off with a bang (IN MY PANTS), while the Android 1.5 and WinMo 6.5 updates managed to raise my right and left eyebrows, respectively, in intrigue. Today's iPhone OS 3.0 reveal? It gives me a warm fuzzy feeling in my stomach. But seriously, I've said too much. Speak on it. Now.