Sony Ericsson had previously committed to the fourth quarter for an update to Android 2.1 on its X10, and as far as we know, that date's still holding firm -- in other words, the update that's now rolling out to units around the world is still the same old Donut you're used to. That said, it looks to be a worthwhile boost thanks to promised performance improvements in the camera app and elsewhere, the addition of a free backup app, and -- in certain locales, anyhow -- PlayNow functionality has been added. It's probably not enough to convert a non-believer... but hey, for owners, it's something.