Well, after the ToB it's the end of the Bhaalspawn Saga, as it is called, but whether it's the end of BG series is unknown. No certain facts are out, rumors though do whisper about BG3. But just about the name, no one knows if there will be such, will it have the same name and all that.
In any case, if there would be BG3, then it definately would not include your char anymore, the Bhaalspawn. Not directly anyway I suppose..
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