HTC has already confirmed that the Amaze 4G will be getting Ice Cream Sandwich in 2012, but an interim update may be hitting today that brings Wi-Fi calling to the T-Mobile-exclusive device. TmoNews reports that several readers received software build 1.43.531.3 this morning after manually checking for a software update, with a new preference for enabling Wi-Fi calling present in settings. It's not clear whether the feature is active yet, but T-Mobile commonly provides the functionality for its lineup of Android and Blackberry devices (the Amaze 4G was rumored to be receiving the feature earlier this year along with the Galaxy S II). There's no official word yet on the rollout of the update — nor when T-Mobile's patient S II owners can expect the same functionality to come their way, too.

Update: T-Mobile has made it official. In addition to Wi-Fi calling, the update also adds Google Music, improvements to Bluetooth and Wi-Fi connectivity, and fixes a time zone issue with the clock widget. The update will be rolling out between now and January 20th.