This is the only 'official' N7 case I could find as of the 27th
http
/www.asus.com/us/Tablet_Mobile_Accessories/Nexus_7_Travel_Cover/
it appears that at least the speaker cut-out is unique to the model. I'd assume that would prevent an optimal fit in any case not designed specifically for the N7. Looks like it's a bit thinner so a case that fits an older Nexus a little snugly may work well, but that's an assumption. I'd not fret thought, as I'm sure there'll be a plethora of options in short order.
Screen protectors (the peel&stick variety) on the other hand should have no issues. I mean it's just surface dimensions, right? So long as your prefered protector meets (even exceeds it, if willing to trim) the size regs.
I have a few questions myself about accessories.
First about the 'SlimPort'. From what I've been able to glean SlimPort ≠ MHL. It requires a SlimPort adapter, of which I've only been able to find models that date from the N4 release (when, I gather, SlimPort was intro'd to the Nexus line). Anyone know of products coming to market with the N7 in mind? Or any recommendations on quality adapters.
Two more questions. I've no experience with NFC, any tips/tricks, anecdotes or horror-stories? And last one, on wireless charging. I'm assuming it's Qi? So any Qi-certified system will be compatible?
eta - Looks like monoprice has some cases listed
http/www.monoprice.com/products/subdepartment.asp?c_id=116&cp_id=11604&cs_id=1160401