Thrawn's Revenge is a large-scale mod for Empire at War: Forces of Corruption. It includes the events of the Galactic Civil War after Palpatine's death at Endor, up until the signing of the Pellaeon-Gavrisom treaty. If you own the Steam version of EaW, you will have to complete extra steps to run the mod after installation. Please see the manual for these steps.
The new supership for the New Republic in era 5 in 2.0. These will be very limited, both in production numbers and which GCs they're actually in (meaning they won't be in every GC set in era 5).