Sins of a Solar Empire's first "micro-expansion," Entrenchment, received an official release date today of February 11. The $10 add-on, which will add several powerful defensive structures to the grand 4X RTS, will only be available through Stardock's Impulse digital delivery service.

Entrenchment is the first of three mini expansions expected to enhance tactics this year. The next addition will add diplomacy features and the last is still under wraps. With this much tactical choice, we fear having to put a week aside to actually finish a basic mid-sized match.

[Via Big Download]

This article was originally published on Joystiq.