The company hasn't explained what the hold up is, but it does add that Android 4.1 will be coming to a host of other Xperias.
There's no time-frame for this yet, and roll-outs will vary by country.
Play 'em out, keyboard cat
Unfortunately for those of you with older Xperia phones, the Jelly Bean dream has crumbled and died.
In the same blog post, Sony announced that "after thorough evaluation, we have concluded [the 2011 Xperia portfolio] will not be upgraded beyond Ice Cream Sandwich".
There was a bit of a hoo-hah over the 2011 Xperia line-up when it appeared in July that the company had given up on them, leaving them to languish on Ice Cream Sandwich forevermore.
But it turned out that what was what was that there is no hope of an official update for the older handsets. Time for a new phone?
From Sony Mobile
Get daily insight, inspiration and deals in your inbox
Get the hottest deals available in your inbox plus news, reviews, opinion, analysis and more from the TechRadar team.
Former UK News Editor for TechRadar, it was a perpetual challenge among the TechRadar staff to send Kate (Twitter, Google+) a link to something interesting on the internet that she hasn't already seen. As TechRadar's News Editor (UK), she was constantly on the hunt for top news and intriguing stories to feed your gadget lust. Kate now enjoys life as a renowned music critic – her words can be found in the i Paper, Guardian, GQ, Metro, Evening Standard and Time Out, and she's also the author of 'Amy Winehouse', a biography of the soul star.