What is the deal with ual.com's seat selector showing premium (green) seats on 762s? Looking at UA16 SFO-JFK in September for example, it has the forward 3 rows of coach as premium (green). I've been on this flight before and it's most definitely not E+.

Would I be right in concluding that it's a bad idea to assume premium seats showing on ual.com equals E+...?