If you are the owner of the usable little tablet, the Acer Iconia A500, you will be glad to hear that Android 3.1 for the device has been leaked. The leak happened in China, but as is typical of the Internet, it is already available world-wide now. Hit the XDA Developers source link below for the download.
Source: Android.net and AndroidTablets.net via Engadget and XDA Developers