If yes where are the sources and references?
I don't believe there are any sources confirming the Resurgents for episode 9, but it's naturally assumed that they will show up despite not being seen in the poster or trailer.
They are the primary ship of the First Order, so it may be odd not to see them at all. Not mention they are one of the more iconic ships in the sequel trilogy.
I just found that in this marketing poster that was leaked months ago, you can actually see Resurgent Destroyers in the bottom corners. They will show up.