Hasbro sent a Cease and Desist letter to the Mane 6 devs. At the moment My Little Pony: Fighting is Magic is no more.
WTF!? WHY WOULD THEY DO THIS?!
They had to wait until it was almost done...
It's not like Mane 6 was even interfering with anything Hasbro was planning to do or cutting into their profits. Hasbro doesn't deserve such an enthusiastic fanbase as bronies.