The SWGOH webstore went down on September 16. EA later marked the post fixed.
Summary by GAC Film Room of an official EA / Capital Games post. The official post is the final word; details can change after it goes up.
Snowtrooper Commander shards move to Fleet Battles 5-D (Hard) and Enfys Nest to Galactic War Shipments, Mercenary Guard Droid (B1) and Adelphi Ranger reach a node about 5 weeks after their marquee, and a Buff Disruption fix.
Chopper and C-3PO add New Republic to their ally synergies (Chopper gets a Carson Teva plus Adelphi Ranger bonus), and Cara Dune gets a large New Republic Galactic Legend bonus in a later update.
A single-episode Mini-Era built around the release of Galactic Legend The Mandalorian and Grogu, with Adelphi Ranger and Mercenary Guard Droid (B1) as its two marquees, a max Era Level of 75, and Droid Destruction landing near its end.