As mentioned on Twitter yesterday afternoon, he allegedly sent over an email. I expressed caution as he's not the one I normally deal with regarding Linux gaming matters, so I'm still waiting on official confirmation, but here's his email below.
We are running into a bunch of performance issues in Linux drivers (e.g. 50 millisecond draw calls because the driver is compiling a shader).Anyone up for this work?
We'd like to hire someone to work on these performance issues. If you know of anyone we should be talking to, I'd appreciate getting connected with them.
Update: I've now been able to attain independent confirmation with Valve (here). This isn't an April Fools' Joke or anything else. They're in need of more Linux folks; will try to get more information to share after the first of the month, since many Phoronix Forums users remain unconvinced about any Valve Linux interests.