Half-Life 2 Hits Mac Steam Tomorrow; Teased via Epic Homage Trailer

[Update 4:47 PM - BL] Valve has confirmed to Shacknews that this release includes Half-Life 2, Half-Life 2: Episode 1 and Half-Life 2: Episode 2.

[Original Story] Gordon Freeman's epic adventure through City 17 will hit the Mac version of Steam sometime tomorrow. To tease this, Valve has released an homage trailer to the landmark 1984 Apple Macintosh commercial.

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I've reached out to Valve to find out if this is just the original release of Half-Life 2 or if it will include Episodes 1 and 2.