Yes, I've seen a couple of spec sheets for the TB150HH9 claiming it has digital audio. That doesn't prove anything, because the original specs for the CM-7000 said the same thing. The NTIA made CM take the digital audio off to get approval for the coupon program.
Also, I think you'll find the TB150HH9 is rather hard to come by. It's possible you'll find a pre-production sample or two on eBay, but I'm pretty sure if this box ever makes it into the inventories of retailers who take coupons, we'll find the digital audio has disappeared just as with the CM-7000.