I've already found a number of options on Amazon:
Personally, I'm waiting for the Ringke Slim case to be released. That's been the go-to case for many of my recent phones. Ringke has a page for it already up on their site (HERE) but it is not yet available and still shows their Nexus 5X case.
So for now, I ordered the Cimo TPU case in 'Smoke' color. This case was great for my Nexus 6P, so it should be a solid option to hold me over. The case will be here next week. As soon as the phone arrives I'll get some pictures and a review posted in this thread.