Beyond those sourcebooks listed above, I would strongly recommend taking a look at
The Wars of Reaving: which covers concurrent events taking place in the Clan Homeworlds during this era. There is also
The Wars of Reaving Supplemental, which offers additional data on the post-Reaving fallout.
Further, I would also recommend the
Interstellar Expeditions: Interstellar Players 3 sourcebook - but only
after you have read the likes of
The Wars of Reaving.
ISP3 is set in 3095, and offers a look at how IE as an organization has been tasked with the search for Blakist hideouts; how it has been affected by the calamitous turn of events in the coreward Deep Periphery; and how it has inherited the old mantle held by ComStar's Explorer Corps in terms of leading exploration and research missions in the spinward, rimward, and anti-spinward Deep Periphery as well.