En inglés:
http://blogs.sonymobile.com/2013/11/...3-kit-kat-4-4
" Last week you probably saw Google announce Android version 4.4; Kit Kat…
We’ve seen lots of questions on our Android upgrade roadmap and equally, we have lots to tell you, so here’s a note on just that…
First up, Jelly Bean 4.3
We’re pleased to tell you that we’ll start rolling Android 4.3 for Xperia Z, Xperia ZL, Xperia ZR, Xperia Tablet Z, Xperia SP, Xperia Z Ultra and Xperia Z1 from next month*.
We also mentioned that a few of our products would be jumping software version – so, we can confirm that Xperia T, Xperia TX and Xperia V* will be upgraded to Android Jelly Bean 4.3… also from next month.
And, to Kit Kat 4.4
We’re also happy to tell you about the first raft of Xperia products that we’ll make Android 4.4 Kit Kat available for – they are: Xperia Z, Xperia ZL, Xperia Tablet Z, Xperia Z Ultra and Xperia Z1*.
On that, please stay tuned to the social newsroom and @SonyMobileNews, where we’ll update you with specific info on product upgrade timings & software features as things progress.
If you have any questions or comments, feel free to drop them below.
*Software rollouts are a phased process – timings & availability may vary by market / carrier"