In a sign of the impending launch of the Sony Xperia P and Xperia sola, the first software for both devices were recently certified by the PTCRB. The Xperia P has software version 6.0.B.1.565 certified, whilst the Xperia sola currently has the slightly older 6.0.B.1.536 software certified.
This is unlikely to be global software as that would normally be depicted by the 6.0.A.X.XXX version number rather than 6.0.B.X.XXX. However, with around a month left to launch it looks like Sony is on track to meet the revised launch.
Thanks @wimpiedb!