Source: modDB
Related: Computergames.ro
Nice informative interview over at the Computer Games website

Computer Games Romania: Should we expect a Collector's Edition of Half-Life 2 close to its release date? Can you give us some details about its contents?
Doug Lombardi: It is my understanding that the Collector's Edition willbe released at retail at the same time as the standard edition. I do not have the final contents, but I can tell you that it will include a mix of extra playable content as well as some collectable type of items.


Computer Games Romania: Are there any anti-cheat measures in Half-Life 2 and Counter-Strike: Source?
Doug Lombardi: Yes. VAC will be extended to Source and activated upon launch.