I think the reviews are going to start appearing online at eleven this morning UK time. Everything I've heard so far makes me think it might be the highest rated game of all time, critically anyways.
Some of the statements in these recent previews that suggest it's the best in the series do seem really over the top, but maybe they're right! The Edge review is really glowing (they gave it a ten) and the scans of that review are available online if people google for it.
I've got too many games to play at the moment and I'm saving up for a deposit, so I don't see myself getting a Switch until June at the very earliest, Christmas at the latest. It's going to be a long wait either way!