Valve released phase seven of the Half-Life 2 preload via Steam which includes the localized content:
The seventh phase of the Half-Life 2 preload begins to Steam account holders today. This will allow users to download localized Half-Life 2 content and other content in encrypted form. No purchase is required to pre-load Half-Life 2, but is required to activate the game. The moment the game is made available, those who have pre-loaded and purchased the game via Steam will be ready to start playing.
News source: Voodoo Extreme