Well, not everyone's obsessed with the latest features, plus there's always a workaround, like apps2SD can already be applied on 2.1, no need 2.2, not that it's even a must have as X10 already has a monster size internal memory which I still find hard to fill. For me the latest version hype is just like Walkman marketing strategy, there are advantages but nothing deal-breaking. Plus, many SE fans would choose X10 for the camera and music which SE has extensive expertise on and couldn't care less about wifi tethering etc.

It is also a fact that 3D acceleration is almost the same speed for both 2.1 and 2.2 . And even if you have apps2SD support you'll still root your phone anyway, who doesn't? I'm not saying I wouldn't want 2.2 if I could, I'm just saying many of us don't think much of it, and the Xperia line sales proves this. FACT.