I haven't heard anything and I haven't really looked either.
I shop at walmart & ad match publix & winn dixies ads. Publix is the most likely to carry some of the CBRL stuff but I haven't been in there in a month or two.
Not sure the revenue to CBRL is going to be meaningful. But it cant hurt as consumers seeing the products in supermarkets might put CBRL in their minds and it might slightly increase visits. It wont be measurable however.