I thought something like this might've happened. This year's calendar of ship art was purely Star Trek 2009 based. It's not even called "Ships of the Line" on the cover. Although clearly that's what they were aiming for.
I'm sitting here with an Andrews McMeel officially-licensed "Ships of the Line" calendar for 2012 and a Universe Publishing officially-licensed "Ships of the Line" calendar for 2013 on my lap as I type.