It's no surprise that the Asus Transformer Pad line is greatly appreciated in the modder community. Asus has almost always done a great job of making things a bit easier on developers and tinkerers, and today is no exception. Asus just released a bootloader unlocking tool for their newest flagship, the Transformer Pad Infinity. The tool is a standard APK file that requires you to be running the current stock version of Ice Cream Sandwich on your tablet. Of course, we must remind you that using this tool to unlock your bootloader voids your warranty. Currently there aren't too many custom ROMs for the tablet, but now that this tool is released, that should change quickly.
Here's a link to the download file: ASUSTeK Computer Inc. -Support- Drivers and Download ASUS Transformer Pad Infinity TF700T
Source: TransformerForums via AndroidPolice