Stardock Entertainment and Ironclad Games announce Sins of a Solar Empire: Rebellion, the promised news about the science fiction real-time strategy series. Rebellion is a standalone expansion for Sins of a Solar Empire that does not yet carry a release date. Here's a description: "The exciting next chapter in the awesome Sins of a Solar Empire universe has arrived. A full-fledged expansion to the original, Sins of a Solar Empire: Rebellion draws you even deeper into the galactic struggle for supremacy with appealing new factions, terrifyingly cool new ships of all sizes, enhanced lighting and particle effects for increased visual pleasure and all-new victory conditions." There's a Brad Wardell interview on Big Download discussing the news, including word that those who own Sins of a Solar Empire: Trinity will get a discount on Rebellion. Here are a logo and a spaceship image, and here's a feature list:

• New Factions: Players decide whether to become Loyalists or Rebels, which unlocks a unique new tech tree granting them new technologies and ship variants.
• New Titan-class ships: Massive warships for each race that dwarf capital ships, these deadly new monsters are capable of wiping out entire enemy fleets single-handedly.
• New Capital Ships: A new capital ship class arrives, giving players new strategic options.
• New Corvette-class ships: Small, highly maneuverable light ships that are adept at a variety of tasks.
• Loyalist and Rebel versions of some of the existing Sins’ frigates and cruisers, each with their own unique strengths and weaknesses.
• Updated lighting and particle effects for enhanced visuals.
• New Victory Conditions to allow for more variety, differing strategies and shorter game sessions.
• Additional capital ship ability levels, for greater strategic choice.
• Impulse::Reactor support for chat, friends, achievements and more.