According to a reply posted on Sony Ericsson’s official Facebook page, the Xperia X10 Gingerbread update is very near and is scheduled to be rolled out starting sometime this week. Company has started the update will be released in phases depending on operator approval starting 30th week [which is the current week]
“The launch of the 2.3 software for X10 is getting closer, and the planned release date is approx. w30. The date could still be changed, since the launch is depending on operators approval. The software will be rolled out continuously, just like the earlier 2.1 release. The exact launch date is depending on market and operators approval, so it will unfortunately not be possible to give precise information on launch dates for each market/operator. You will get more information once the roll out has started.”
…so it could be available any day. Keep in touch with your local teams for more specific information since I probably won’t get any more market specific info than this.