Credit to Nzyme32 and Sajko:
The question comes at the end of the video. Valve accidentally included a mock-up in a beta update a few weeks ago:
It's been a long time coming: the last overhaul was in April 2010.
Probably already posted - Valve's Steam Team Interview
Pretty interesting so far, but only a quarter way through
Looking forward to that client overhaul they plan. They mentioned they are aiming to launch beta in summer. But then again this might shift as we are talking about Valve here.
The question comes at the end of the video. Valve accidentally included a mock-up in a beta update a few weeks ago:
It's been a long time coming: the last overhaul was in April 2010.