Got the email too and was in 2A yesterday when the FA came around and announced the catering issue. He was profusely apologetic (almost too much so) and offered the snack basket and BOB items instead. I don't care that much about food so I just grabbed a bag of chips. This was on a E175 so I'm pretty used to not having a meal anyway.

Later he came around again and offered everyone in F compensation. I declined but it seemed a bit over the top for a 3 hour flight. I've never seen that much fawning and apologies when my flight is delayed - which happens far more frequently.