March 2018 is as good a guess as any. KS7s came out in September 2016 and they’ve averaged about an 18 month cycle. It’s difficult discerning patterns with limited data. I’d guess it would be an updated Rexton, but before the KS7s came out, I’m guessing most would have guessed an updated Resound. I wouldn’t get too hung up on having the latest model. If there’s some feature that you think is really important, try it out, but a lot of us think that there’s not a great deal of difference between fairly current hearing aids.