Since they got the Onkyo marketing in the press release its definitely going to be an Onkyo brand...
I will be pleasantly surprised if it is a Pre/Pro, if it is then I am preordering day 1. My PR-RZ5100 has been phenomenal, still extremely capable, and still worth a chunk of change.
But from the press release they say 1 of the 2 products is an industry first. My money is that Dirac Bass control is included at no extra charge. Then couple that with 4 XLR Subwoofer preouts on a Pre/Pro, and you got yourself a chef's kiss.