Further to the E3 news announcing that Portal 2 is coming to the PS3 in September 2011, we also have the trailer from the E3 conference here:

“Gabe Newell announces that Portal 2 will be coming to Playstation 3 in 2011. This is the trailer played during the Sony conference on Tuesday 15th June”

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1. E3 2010: Portal 2 and Steam Coming to the PS3
2. Playstation 4 to use Playstation 3 Cell Processor?
3. Heavy Rain confirmed for February 23rd release on PlayStation 3
4. Sony’s 12 deals of Christmas for PlayStation users
5. PlayStation Store Update – September 25th