A 36 Megapixel camera, with or without an AA filter is terra incognita for many photographers. Till now, unless one has been able to outlay $25,000 to $50,000 for an MF back, camera and lenses, this type of resolving power has not be accessible. Now, for about $3,000, is the D800 series able to match medium format other than in resolving power? We'll have to wait until photographers with MF systems have a chance to do some comparisons, but I wouldn't take bets either way at this point.
Keep in mind that a 36 Megapixel camera isn't for everyone. If you just shot for the web and electronic media; if you rarely make prints larger than Super-A3 (13X19"), if you don't own high-end glass and know how to get the most from it, then neither the D800 nor the D800e are going to make a visible difference to your photography – at least not in terms of their higher resolving power. But if you do make large prints, do have some top Nikon and third party lenses, and do understand and practice optimum shooting technique, then it's my guess that there is nothing for the price that will do as much for your output as one of these two new cameras.
I can tell you that I have placed my order for a Nikon D800e from my local dealer, and hope to take delivery in mid-April. This coincides with my return to Toronto from Mexico, and I expect to spend a good part of the summer shooting various projects (stills and video) with the new Nikon. You can therefore expect several reports on the D800e to appear here in the weeks and months ahead. Friends and colleagues with various MF gear, including the Leica S2, Pentax 645D and Phase, Leaf and Hasselblad backs have already volunteered to help with comparison shoots, and likely the web will be full of such from other sources as well before long.