They've actually been out for about a month now, at least up here.
Mango - I read a review that said they taste like bath & body lotion. Can't disagree, although I've never tried to eat bath lotion. But I would imagine it would taste similar.
Mac & Cheese - not bad, but nothing special as mentioned.
Wasabi - better than I thought they would be; my biggest complaint is actually the kettle chip texture. This flavor on a regular chip would be pretty good.
Cappuccino - as horrifying as they sound, I think these are pretty darned good. Have already bought several bags to hoard in anticipation of them losing out and being gone forever