Lenovo is the latest member to join the Android 4.0 OS update list.  It is reported that the Chinese company is planning to upgrade their ThinkPad tablets with the Android Ice Cream Sandwich update. Earlier, the company had hinted at an Android 4.0 OTA update pack for their ThinkPad and IdeaPad tablets, without a specific time of the pack’s release. But this time, Lenovo has revealed that the Android Ice Cream Sandwich update will reach the ThinkPad tablets in the second quarter of this year.

Back in July 2011, Lenovo launched the ThinkPad tablet as a business tablet. The Android 3.1 Honeycomb tablet is available at a price of $479. The 10.1-inch slate offers a battery back up of eight hours and weighs only1.65 pounds.

After the Android 4.0 upgrade, the ThinkPad tablet users will get improved user interface, connectivity, application and multimedia features. In addition, the new OS comes with advanced encryption layers for data and e-mail security that the enterprise users will like.

Since the ThinkPad tablet does not have the NFC feature, the users will not be able to enjoy the Android Beam, which allows the sharing of Web content, maps and directions between tablets by simple tapping.

So ThinkPad owners cheer up and stay tuned to know the specific date of the Android 4.0 update release.