For owners of the LTE version of the Xperia ion handset (also known as LT28i), Sony have started rolling out the much anticipated update to Ice Cream Sandwich.
Currently the update is available only in the territories of Taiwan and Hong Kong but, other markets internationally are expected to receive the update soon. The firmware version on handsets will increase to version 6.1.E.1.19 as Android 4.0.4 installs itself on the Xperia ion handset. For those users on AT&T, news should be coming soon regarding when this update will be available to you to download to your handset.
It is reported that the version of ICS that this update installs actually is the same as that found on other Xperia handsets that have Ice Cream Sandwich installed on them ie the Xperia S and Xperia P smartphones.