Nashbar posted on their FB page that they will have something fat bike "soon".
Back to the original post, I bought my GT Peace 9r as a leftover model for $400 (1/2 off) to "try" the 29er concept. It's the only bike I've ridden for the last 4 years! In that time, it's required zero repairs. If you compare that bike with a Pugs it's about the same other than the wheels/cranks. If GT can duplicate what they did with 29ers with a fat bike in the $800-1000 MSRP range they'll have a huge market.
I have been watching the calendar since I saw the trailer on GT's website counting down until the 18th. I'm hoping it's a 650b. I've have to stay away from my local Performance stores this weekend. 30% back on points is really tempting to me on a GT Sensor 9R Expert. A 650b would be worth the wait.