Starting this Sunday, October 31, Sony Ericsson will make good on a promise made earlier this year. The Xperia X10 will finally get its long-awaited Android 2.1 update.

Sony Ericsson Xperia X10

The official Sony Ericsson product blog posted an article today advising that X10, X10 Mini, and X10 Mini Pro handsets will begin receiving the Eclair update on Sunday evening. Initially, only phones in the Nordic countries will see the update, with other European countries getting 2.1 starting Monday, November 1. All other X10 phones, including those used in North America, will get their update by the end of November.

I've long said that the X10 could contend with any other super phone were it running a current version of Android. The hardware is gorgeous with its 4-inch screen, a 1GHz processor, and 8-megapixel camera.

It will be interesting to see if sales of the device increase once the update rolls around. The addition of 720p HD video recording with continuous autofocus, five home screens, and a backup-and-restore application make the X10 highly appealing.

The X10 Mini and X10 Mini Pro feature completely different hardware, so their respective updates won't be quite the same. Both devices can look forward to better performance with Bluetooth, an optimized way to handle pictures, text, and numbers, and automatic sync between the contact pictures and Facebook. The backup-and restore-application found with the X10 will also be included.

If you have an X10 series handset, your phone should automatically notify you of the update once it's available. Users will be reminded to back up their data and directed to download PC Companion software.