Would be a 10 track recorder priced somewhere between the MixPre-6 and 633, I assume. Further competition to the Zoom F8! (as while the MixPre-6 is great, there are still many reasons why people might prefer an F8 instead)
http://ironfilm.co.nz/leaked-is-a-new-sound-devices-mixpre-10t-coming-soon/