It was impressively-rated when we reviewed the handset a short while back and now the Sony Ericsson Xperia X10 could get a whole lot better. Although not as quick as you might like.According to Sony Ericsson, the upgrade from Android 1.6 to Android 2.1 will take place in 'Q4 2010', which is effectively in the run-up to Christmas. So good news, albeit with a wait, tempered by the fact that 2.2 will be around in a short time, while other updates might well have come and gone by the time X10 owners see their own upgrade.The problem is essentially down to the way Android is used on the X10. As SE uses a customised version of the OS with its own interface, a new version means more customisation to deal with any new features. So in essence, the phone could always lag behind other Android phones in terms of upgrades.In terms of specifics, the new version of Android will bring HD video recording to the handset (like the Sony Ericsson Vivaz), wireless home connectivity via DLNA and improvements to signature applications Timescape and Mediascape to make them 'even smarter and richer'. All of which will be available through the update service at the Sony Ericsson website.