I bought one
Just the 16 gig.. basically I needed a new kindle but I normally carry 3 separate magazines around with me. All these mags are available on the newstand and look pretty good on the device so I save a significant amount of weight on my cycle to work...
Few points to note from it:
1. Its a bit pricy compared to the competition, but as a user of other apple products it is far simpler to keep in the family? For me, turn it on and work with all my other stuff is worth a few quid
2. Lack of retina really a pain - So my use case is for reading (kindle app) and magazine subscriptions. The text is a little big jagged and in zoom mode sometimes a bit fuzzy as well, not sure if its the apps
3. Size is actually perfect - I reckon they nailed it. Back to back with a kindle it's slightly wider and slightly taller but I can confirm reading magazines one-handed on the train this morning squashed up against commuters was a breeze. I can't do that with my magazines so works for me.
In summary, if you in the android camp you'll no doubt hate it and if you are Apple fan you'll love it... For me it was this or a Kindle paperwhite and what I got was a paperwhite that can also be used to read my mag subscriptions on the commute... for me that outweighed the benefit of a longer battery or e-ink display
Note: Just in case anyone wanted a reasoned use case for potentially buying the thing