It looks like the Ponies have joined Firefly, the Bluth Family, and Ghost in the Shell.
Today both of the My Little Pony projects (there could have been more but there were really only two that mattered) went away. One or the other would make we wonder about the creators, but both...well.
We always knew that Hasbro, the owner of My Little Pony, would never give Lego permission to build MLP sets. Especially since they already have a brick company now.
The Official word from Lego can be seen here: http://lego.cuusoo.com/ideas/view/11176
It appears safe to say that Lego will not be accepting any Hasbro owned properties.