keeping an eye on the avalon software, I have noticed this:

https://github.com/Canaan-Creative/cgminer/commit/e0a064459d8764f562831cd79c7900caef985008

So it looks like we will have   a new Avalon 761 with 26 chips on a board  (108 asics if the number of boards will be 4 as in 741).  So we expect around 9TH per miner.