In Treyarch’s Call of Duty: Black Ops update 10 they added two new playlists for the online multiplayer Hardcore game modes, one called Bombs and the other called Flags. These are nothing extrodinarily new just a nice addition to the options available for the Hardcore game mode.
In the Find Match menu the playlists are described as:
Bombs – Moshpit of hardcore game modes that use bomb based objectives. No Second Chance. Players 6-12
Flags – Moshpit of hardcore game modes that use flag based objectives. No Second Chance. Players 6-12
So Bombs playlist will include Demolition, S&D (Search and Destroy), Sabbotage and Flags playlist includes Headquarters, Domination and CTF (Capture the Flag)