We got our ones to check the register details some time ago. I don't think we've had easy-vote cards yet. But it's not like local elections where you get voting forms, for the general election you go to a voting booth, they cross your name off and give you a voting paper to fill in on the spot.
If you're not registered to vote yet, you can register at the booth. If you end up in the wrong area (so your name isn't on their list), you can do a special vote.
You should follow up to make sure the registered details are correct if you didn't receive that one, but don't stress too much. It won't stop you voting.