Daily Chess Improvement: New Year Endgame Improvement!

This is an important endgame to understand

White to move. Is this a draw or loss for white?

No. 1-1

Looks like a draw if black tries to break through the f pawn, even backed by the king. WK stays at d3/e3/f3 and the e pawn can't queen.

There might be a zugzwang involving the BK going on the opposite side to whichever WK chooses and penetrating to d4/f4