...that they'd be saying something about the HL2 multiplayer "not long after E3"?  So far, about the only things they've said about multiplayer are:
That said, I'll be playing the single-player game before MP, though I will be hosting a server for you cart-before-the-horst types out there
				
			- There will be multiplayer with HL2
 - Said multiplayer will not be TF2
 - TF2, in fact, will be a separate product
 - Authentication, messaging, server browsing, et al., will take place over Steam
 
That said, I'll be playing the single-player game before MP, though I will be hosting a server for you cart-before-the-horst types out there