A new firmware update has started to hit certain handsets. The v2.1.B.0.1 update is the latest firmware listed on the PTCRB site, which was certified on 24 May 2011. This new update comes on a new baseband too (2.1.67).
Right now we’re not too sure what benefits this update brings – this is NOT Android Gingerbread before anyone asks – with some users saying an improvement in performance and battery life. If anyone knows for sure let us know in the comments below (as usual SE has not issued a changelog). If you haven’t got the update, it can be flashed from here.