Just last month Sony-Ericsson Announced that the X10 will not get the FroYo, but just for now, they have a nice update that gives you some bug fixes and even the Multi-Touch support. This update has been anticipated for quite some time now with many users requesting the function, and I am sure many of us are actually very excited for this new.
Now this update doesn’t get you a newer software number, but at least you’re on step closer to a better performing device.
The update can be acquired via OTA and also Desktop update.
Source (Xperia X10 gets pinch-to-zoom update | Android Central)