The Sony Xperia tipo dual has had its first firmware certified by the PTCRB. Both the international (ST21i2) and North American (ST21a2) variants have popped up showing 11.0.A.1.12 firmware. This relates to a version of Android 4.0.4 Ice Cream Sandwich.
The budget Sony Xperia tipo dual is identical to the Xperia tipo but offers dual-sim capability. It will be released in select markets around the world, but the UK won’t be one of them.