Source: Half-Life Fallout

Half-Life Fallout reports that they got word from Valve about the release date of the Half-Life 2 SDK (Software Development Kit):

Everyone is excited about the release of Half-Life 2 the game, but a lot of modders are more excited about the SDK (Software Development Kit) release.

Rumour had it, that the SDK would be released about a week prior to HL2 hitting store shelves. But HLFallout member psiphon wanted confirmation and popped a question Valve's way regarding the release date. Here's what Rick from Valve had to say:

It should be out around the same time as HL2 hits store shelves.

This is great news and I'm sure most modders can't wait.

For more info check out Half-Life Fallout.