They'll add more companions. That's something they said.
The real question is how many... I really hope we'll have 8 more, one for every classes. 12 companions (is not enough but it) looks pretty decent.
+1
Baldur's gate 1 had 25 companions , not counting the one of beamdog. Baldurs gate 2 has 17 . I personally would love a number around 15 companions, or more if possible.