New Edition pre dates New Jack Swing and Teddy Riley......
I think groups like New Edition and The Force M.D.'s incorporated rapping into their music but it
wasn't exactly new by the time they were doing it for example : Fantastic Voyage dropped in 1980 and the single
features rapping from the band members and Marvin Gaye's "Ego Tripping" had dropped way in 1979 and features
Marvin spitting a brag laden verse.
I think by the time New Edition and The Force M.D.'s were doing their thing Hip-Hop/Rap had already begun to bubble to the surface
and get incorporated into R&B music.
And I could be wrong here but I don't think "Hip-Hop" proper was incorporated into R&B until Teddy Riley came along with New Jack Swing.
By the way, I think this is a dope chance for brehs to converse and drop knowledge. So if someone has information that runs
counter to mines, I won't argue.