"It's being worked on but we don't have an ETA," said Newell in response to a question about Global Offensive on Linux.
Valve released Global Offensive in August 2012 on Mac, PlayStation Network, Windows PC and Xbox Live Arcade. The objective-based first-person shooter was the first entry in the Counter-Strike franchise to debut on consoles alongside the PC release. Global Offensive contains updates to classic modes and maps from the original Counter-Strike, as well as a bunch of new content.
It seems that the Linux version of Global Offensive will arrive sooner rather than later. Asked about Half-Life 3, Newell gave a different kind of response regarding a release time frame: "When we announced our products years in advance in the past and then were really late delivering them, it was pretty painful for both us and the community. We'd rather not repeat that."