I'm inclined to believe there's a non-DPAF 24mp sensor that the 'III' suffix really belongs to, as in "Hybrid AF III" and not "we've skipped I and II but here's a 24mp DPAF III!"
Wasn't there a spec list for the new Rebel somewhere that mentioned a Hybrid AF III? Looks like someone's stringing along various acronyms and numerals they've seen knocking about and imagined themselves a dodgy new product!
Could be a mix up there between the Dual Pixel and Hybrid but note that the first version of Dual Pixel AF was the 70D and then we saw a similar but slightly modified sensor in the 7DII making it DPAF II and if these rumors are true this 24MP sensor would be the third iteration of Dual Pixel.
My guess is it will have a hand-me-down sensor from the 70D and about 5fps. Maybe NFC. Optional VF. I can't see them doing a completely new 24MP sensor with 7fps in an EOS M.