Gabe Newell made a couple of posts to the
Half-Life 2 Fallout Forums
about plans for Counter-Strike: Source and
Half-Life 2 data preloads on Steam in preparation for the release of each.
Regarding Counter-Strike: Source, he says this in one post: "Just got out of a
review meeting. 8/11 the Cafe's turn on (tomorrow). 8/16 CZ/ATI users pre-load.
8/18 CZ/ATI turns on," and in a subsequent post: "The engine test (CS:Source
plus de_dust) for cyber-cafe's started pre-loading at 6." There are also posts
Steam Users Forums
indicating that Valve has started to pre-load
Counter-Strike for some end-users (thanks Stoo). The first post also has word
from Gabe on plans to start preloading art and sound assets for Half-Life 2: "8/17, HL-2
pre-load starts (textures, audio and other stuff that doesn't change)."