Seems to me the Arc 7 is a step back from the original Arc (ok SD slot and faster processor, but screen res and battery life is worse).
Why have they opted for the backs that they have on the new line? They are not symmetrical. Swapping from one hand to another will feel really odd.
I must note that it is strange lack of Kobo people here on MR anymore, along with Getsatisfaction hasn't seen one reply to a post in a looooong time. Hmmm