Sorry to say that it wasn’t.

It could be an update to unlock Gil again (it was, as it turns out!) or to prepare for the end of the Valentine’s Day event. There’s also been a glitch with XP points and bonus percentages generally, as well as with certain buildings, so it may have fixed his. However, the harp seems to remain for people with that problem.

By the way, the harp of death seems to relate to leveling up and hitting the bonus level, rather than building the Wiggum House or El Chemistri.

P.S.: As you can see right above, the update gave us the Heart Grinder.