Kotaku has been told by Valve’s VP of Marketing, Doug Lombardi, that Portal 2’s first batch of DLC will be releasing by mid-September. It was initially announced that the content would be coming this summer, but Lombardi re-assured Kotaku that September is “still technically summer.”
Dammit, he’s totally right. Sure, it may not be summer anymore for kids and college students no longer at home, pant-less in their basements. But for mother nature and papa science (AKA “Bill Nye”), summer is still blazing outside until late September.
Unless, of course, you live in the southern hemisphere. Then, please, go check that toilet thing for us one more time.
As for what the DLC includes... we don’t know. Will it be story content, will it be purely puzzles, will it involve the events between Portal 1 and Portal 2? No clue.
Here’s what we do know. It’s coming mid-September. It’s for Portal 2...
Oh, and it’s free! Yes, free DLC for Portal 2 this September. We’ll have more as it comes up.