Set over 30 years after FreeSpace 2 and about 50 years after INFASA, Nostos tells the story of GTVA's contacts with the Earth Alliance and the sudden re-appearance of the Shivan threat...
The Odysseus is, even considering the name, a derivation of the GTF Ulysses seen in FreeSpace 1 and FreeSpace 2. Although it's likely be excluded from INF SCP, it will almost certainly be used in INFA2.