Portal 2's first downloadable content will be released this summer, Valve's confirmed.
Details on the mysterious add-on, which is set to be supplemented with more videos and comics, will be revealed in "a week or so", Valve marketing overlord Doug Lombardi told Fast Company.
"We will be announcing some DLC for it, so folks can keep a look out for more content coming this summer," he said. "We'll be putting more details out about that in a week or so. We'll support that with more videos or more comics."
There's obviously no info on what we should expect from the new content, but we reckon extra co-op levels is what Valve will go with (though we'd love more single-player story).
In CVG's Portal 2 review we awarded the game 9.3, calling it "Imaginative, challenging, hilarious and sometimes a bit exhausting". Have a read.