From gameexplain.com (had the most images, but its verified on Kotaku as well).
[release]Portal 2 - First Images of Map Editor By: Andre Segers | October 21, 2011, 5:37 pm[/release]
[release]Earlier today, Valve announced that a map editor is coming to Portal 2 early next year. It is said to be to allow users to easily create and share new test chambers for the critically acclaimed title, and the newly-released images below seem to verify that. Check the full press release below.[/release]
[release]October 21, 2011 - Valve, creators of best-selling game franchises (such as Half-Life, Left 4 Dead, Team Fortress, and Counter-Strike) and leading technologies (such as Steam and Source), today announced the second game add-on for the year’s highest rated multiplatform game, Portal 2, is in development and targeted for release early next year.
This major update will feature an easy-to-use in-game map editor that will let users design, build and share their own single-player and co-op test chambers with the community, who will be able to view, play and vote on them with a simple click.
Portal 2 was released April 19, and currently holds a Metacritic score of 95%, making it the top-rated multiplatform game of 2011. Its first content update, “Peer Review”, came out two weeks ago.
A hilariously mind-bending adventure that challenges you to use wits over weaponry in a funhouse of diabolical science, Portal 2 features expansive single and cooperative multiplayer game modes. For more information on Portal 2 and its downloadable content, please visit http://www.thinkwithportals.com.[/release]
Original article here:
And Kotaku’s article: