Board Thread:Theories and Speculation/@comment-28838247-20160630092716/@comment-25319479-20160630102222

Normally Sarada would take on her husbands name like with Hinata Uzumaki, but for the sake of continuing the Uchiha name, she would have to marry someone who doesn't have a surname, resulting im him and the kids becoming Uchiha in name, eg Sai + Ino = Inojin/Sai Yamanaka.

And given how Sasuke didn't even kiss Sakura as he departed the village in gaiden, i think getting Sakura pregnant again is the last thing on his to do list.