Anno 2070, last year's entry in Ubisoft's long-running RTS series, gets a major expansion this Autumn, the publisher has announced.

Titled Deep Ocean, it adds a new civilisation level, with the Tech faction expanded by the Genius class.

The new class offers access to the new Tech Monument, corresponding production chains and consumption goods.

You can also expect new vehicles and items, which will allow you to develop industries, strengthen your economy and exploit new resources. See the new screens below for a closer look.

Other new features added in the expansion include the following:

Acquire enemy territories without using military force through the "Hostile Takeover" feature

Resolve energy problems by building the new underwater geothermal power plant

Optimise energy supply through "Energy transfer" between islands

Face a new dangerous disaster: The Tsunami

Unlock new rewards for each faction's career ladder

Take advantage of new underwater trading routes

Experience over 150 new challenging quests

Unlock over 30 new achievements

Access to player comparison via new leaderboards

There's no word on a firm release date or price as of yet.