The Android 4.0.4 Ice Cream Sandwich firmware started to roll out for the Sony Xperia P a week ago and it looks like the update for the other NovaThor chipset-based Xperia handsets won’t be too far behind. The Sony Xperia go, Xperia sola and Xperia U have all had firmware version 6.1.B.0.544 certified by the PTCRB.
This is the same ICS firmware that is currently rolling out to Xperia P handsets. It’s tricky to work out when exactly the firmware will actually be available, but a fortnight is normally a good rule of thumb. This doesn’t always work however as sometimes the firmware is released even before we see it pop up on the PTCRB website. Sony Mobile committed to a Q3 release for the Xperia U so as we approach September, it shouldn’t be a surprise to see it be released in the next few weeks.