i work for frito lay,
I have noticed them at Walmart, Shop N Save (Midwest) and Schnucks and Dierbergs....
in other regions I couldn't say but if I had to guess Walmart would be the best bet.
There is also a Cheesy Garlic Bread flavor as well.
P.S. Just to add, they came out this week here in the midwest.... may not 100% be out in other regions yet.