Same boat as you mate, except I want it new.
I want one so bad (My local store here in MX has them for 79.99 with an HDMI cable since they are having this moving out of the mall sale), but I dont want September 10 to come and get stuck with an older device.
I do belive the update could be software side though, Im just waiting to be sure.
The sale ends September 9 though 🙁