It's been a long time coming, guys – we've definitely seen our fair share of upset Xperia P owners who've been waiting for this update. But, the good news is that it's finally here, and the P is joined by the go and E Dual.
According to the Sony blog, the 4.1 update not only brings Jelly Bean, but also a slew of new enhancements that Sony has been working to "blend" with the OS. Among these new features, you'll find updated versions of WALKMAN, Album, and movies; a way to make your battery last longer with "Battery STAMINA Mode," a more customizable launcher, more home screens, and more. For more details on the new features, check out Sony's post.
The update is scheduled to start hitting devices this week and will "ramp up over this month and next." Better late than never.
On a related note, owners of Xperia S, SL, acro S, and ion should expect their Android 4.1 updates to start at the end of May.
Source: Sony Blog