AFAIK all postage rates went up! I had no clue. Friend & I were talking about it that day, in fact. I had gone to the PO to send some 'fits it ships' boxes. Lady in front of me had a box of what presumably were wedding invitations and ended up having to add a penny postage to each one. Felt bad for her - not so much for the $$ - it was relatively inconsequential, but I'm sure it messed up the 'look' of the envelope. And based on what I could see of the invites - looks were important! Fortunately doesn't effect forever stamps so my bills went on their way without a hitch!
But what the friend I were discussing was how I had not heard/read about the increase anywhere. I read news online each morning; watch local and national news on tv each evening. Have my homepage set to msn. Not one of those vehicles mentioned a postage increase in the preceding days.