July: The NCC-76890 looks like it's set in-between the Ambassador- and Galaxy-classes but more advanced than both. While it is certainly good-looking, I wouldn't think Starfleet releases an exact intermediary between two flagship classes. Maybe we could learn more about that ship if it receives a cameo in a novel.
You're referring to the design in this thread
, I believe?
Yeah, the Onimaru is one of Madkoifish's designs. You can find on his blog (with lots of eyecandy) here
. He does some really stunning ship designs.
Also, June is the Belknap class, a fan design that I believe predates FASA trek products. The only images I can find from the calendar on the web are too small to determine if this is a nuTrek version or not.