4 new kits and new rules is pretty substantial as a release, in fairness.
Two are characters though. I think GW is patting themselves on the back a bit much with mass releases, since like half are characters and primaris lieutenants vs unit boxes.
More likely five kits actually.
Jain Zar, Drazhar (likely to be revealed next week), Howling Banshees, Howling Banshee Exarch (because you KNOW GW will make that a separate kit, or at least a special/unique sculpt for a clampack one like they did with the Plague Marines with the Champion and Icon Bearer), and Incubi.
Which means three are single characters. But yeah