It's just a rumor for now, but it can be true. This may be a similar game mode like Team Fortress 2's territorial control point mode.
Extra code has been found in the cstrike.fgd file relating to a new Gametype called 'Heist'. In this code there is talk of 'Territory' and 'Respawn Areas' - it would appear that Heist is a sort of Territorial Capture Mode. It then goes on to mention the map cs_assault and many different capture points in this map, including 'Terrorists' Base Territory Point (Non-Capturable)', 'Bank Territory Control Point' and 'Surveillance Center Territory Control Point'.