Well, that's not really a new topic, but the related posts to the topic sure are!
Some people on the cruise have confirmed that Kevin himself confirmed that he'll be on the new upcoming album. Here are some related tweets:
Backstreet_BR BSBrazil.
Confirmed: Kevin just said that it will record with the BSB. Wohooo
CONFIRMADO, Kevin Richardson a confirmado que grabarĂ¡ nuevo CD con sus muchachos de Backstreet Boys . Primo... fb.me/1eX3efzVC
kayla_danice
So Kevin's coming back, that's awesome!
I hope he can keep up with the rest of the @backstreetboys.