Questions about Halo 3:ODST Multiplayer

I am just wondering what the multiplayer for ODST will be like. I know it has a new single player campaign and firefight mode ( i think that's what it's called ) but what will online be like. Is it a new multiplayer or does it come with just game add on maps for Halo 3 and regular Halo 3 multiplayer? Help is appreciated, thanks. :P

The latter of the two.

Halo 3's MP with all the previous Maps and 3 new ones.

Halo 3 with all the maps and 3 more, pretty much the same....12345yon

[QUOTE="12345yon"]Halo 3 with all the maps and 3 more, pretty much the same....fudger2

[QUOTE="fudger2"][QUOTE="12345yon"]Halo 3 with all the maps and 3 more, pretty much the same....orb_03_2006

Weird part is it takes you to a UK Playstation site.

[QUOTE="orb_03_2006"][QUOTE="fudger2"] I see youre ALREADY PLAYING ODST!!!!!istreakforfood

Weird part is it takes you to a UK Playstation site.

its just cause the hyperlink joined with the PStag one, happened to me before and No, its not fake