Sony Ericsson has been sketchy over whether the Xperia X10 handset will see the latest & greatest Android 2.0 (Éclair) update on release. The phone was announced to hit with Android 1.6 (Donut) only, prompting many questions from consumers as to why it won’t have the Éclair update, especially since it won’t release until next February.

SE developers have already said that the “UX platform used for Xperia X10 will evolve to Android 2.0 over time,” although no timeline was given. As the handset is not a ‘Google Experience’ device, it will not see OTA updates. SE has tweaked the Android OS, which means that like HTC and Motorola it will take longer for SE to come out with the update.

However, in a surprise move, Google has released the source code for Android 2.0 to the Android Open Source Project. This was something that was under lock and key (even for some manufacturing partners!) This hopefully means that there is a much higher chance of seeing Android 2.0 (Éclair) on the Xperia X10 close to launch. Maybe, just maybe, we could even see the phone launch with Éclair. We’ll be following developments closely.