Chess variants on a 10x10 board, in particular Grand Chess.
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rod03801: The rules for Dice Chess list the differences between regular Chess and Dice Chess. Considering promotion to King isn't listed as a difference, the rules already cover a pawn cannot promote to King.
However, I find the current rules a bit silly. If your Pawn is one move away from being promoted, you'll never roll that 3 if you don't already have a Bishop. IMO, if one can promote a Pawn, all rolls 1 .. 5 (and 6 if the King can move) should be possible to roll.