From their announcement:
Star Trek HeroClix: Tactics puts you in command of Federation and Klingon vessels and is 100% compatible with the HeroClix core rules system. Tactics is intended as a standalone game system and will exist outside of the Modern and Golden Age tournament environments. What this mean is Tactics operates by the same rules and Powers and Abilities card that your standard HeroClix game is played with, but is meant to be played as its own game.
Tactics features more than 20 pre-painted ships from both the Federation and Klingon affiliations and will be available for sale in both a 4-Ship starter product and single figure boosters. For more details, please refer to our Retailers Downloads section.