Last month Acer released the Android 4.0 Ice Cream Sandwich update for their Acer Iconia Tab A500 tablet, and now it looks like the update has now been released for the Acer Iconia Tab A100.
The Android 4.0 update was apparently delayed slightly, and it looks like it has now been released as a number of owners of the Iconia Tab A100 are reporting that the update is available.
If you own the Acer Iconia Tab A100 you should have received a message saying the update is now available, if you haven’t as yet you can check manually through the settings to see if the Android 4.0 update is available for your device.
Source Android Central