Aperture Science Perpetual Testing Initiative, May 8, 2012.

http://store.steampowered.com/video/620

This will include a puzzle designer and distribution of puzzles through Steam Workshop. More info on the official Portal 2 blog:

http://www.thinkwithportals.com/blog.php

Skyrim fans, be sure to check out the Steam Workshop for Skyrim, where you can find a little Portal 2 crossover mod: http://steamcommunity.com/sharedfiles/filedetails/?id=7375
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