I was in SLC a few days ago waiting for a flight to CVG when boarding started at the next gate for a flight to JFK. I was surprised to hear them start out boarding by calling for "Business Class." I wondered if they had one of the international 757s on the route that day, but it was operated by a 738. I've looked into it since then, and delta.com is selling Business Elite on certain 738 flights on SLC-JFK and some other routes.
Is this a new thing? I hadn't heard about it. I assume that it is just the standard domestic F seats with enhanced catering or something? Does anybody know more?