Doesn't seem to be EU related. I'm in The Netherlands, using the .eu servers from 1Password and the email I got just says:

> The new price will take effect at your next renewal, provided it’s on or after <date>. Those occurring prior to <date>, will continue at the current pricing until your next renewal.

Same here in Switzerland. The instructions in the email say to confirm the price change under my.1password.com/billing but I don't see any confirmation options on that page. So i'm assuming my account will just be canceled ^^