SWV (I'm sure most of you know them) are coming back with an album for 2010. From the sound of Coko
Only 1 CoKo! (CokoClemons) on Twitter (via twitter) they have already recorded some songs. If you know SWV you'll know they are probably one of the worlds most popular (TLC, DC3, Spicegirls, and En Vogue) and one of the best selling female music groups. They had pop/r&b cuts like Right Here, Weak, I'm So Into You (GTA SA), Rain & many others. So when/if they do comeback the younger generation would probably recognize who they are because of their popularity. They still sell out tours to this day..
Also, Mint Condition is still on the scene, but I think they are mostly independent..
Joe
Charlie Wilson
En Vogue (Has a new album coming out)
TLC (Has a reality show and album coming out)
Teena Marie
Eric Bonet
Maxwell (His latest album went Plat)
Mariah Carey (Emancipation of Mimi, heavily based R&B album..10x plat in America)
and etc.
So you still have the ESSENSE of R&B, but it isn't as popular and good as it was in the 80's and 90's.