Originally Posted by Wormerine
Unknown. Initially it was to be up to level 10 due to work required to implement spells. In, I think, RPS interview some months ago it was said the level cap will be most likely slightly higher then that, but there is no word of how high it will be.

Originally Posted by S2PHANE
If they stay true to 5th edition it should be level 20.

Single campaign doesn't need to cover all possible levels. As a matter of fact, more focused progression of BG1&2 I think worked better then single games spanning from zero to hero (Icewind Dales, PoE1&2, Kingmaker)

Personally, I don't think they will go as high as 20, probably end it at around 15, then save the final 5 levels for the first expansion. You figure the starting level you will probably be leaving at like level 5, if there is 3 more chapters, each higher level taking a little longer, 15 sounds about right to me. But I mean that is just my theory.