On March 1, 2011, Rebellion – the game's third expansion, and first full stand-alone expansion – was announced. Rebellion adds new Loyalist and Rebel factions to each playable race, a new capital ship for each race, new "titan" super-capital ships, and light combat corvettes, as well as unique research topics for each Rebel/Loyalist faction. Rebellion also includes an updated graphical engine. Exactly one year from the announcement, the beta was made available for pre-order customers without prior warning. Rebellion was officially released on June 12, 2012, and includes all previously released content. The expansion uses Valve Corporation's Steam to download and install updates. The British video game developer Rebellion Developments has been opposing the use of "Rebellion" in the name of the game since 2012 due to trademark law.