Do we know what Meganium’s Mega Evolution might be?

Chikorita, Tepig, and Totodile are the starters in Legends: Z-A, which has fans convinced their final forms will each get Mega Evolutions. For Chikorita, its final stage is Meganium, and fans are theorizing its Mega Evolution might be a grass/fairy-type because of one small detail in the trailer. The Chikorita shown fighting the aforementioned Flaaffy knows the attack Disarming Voice, a fairy-type move Chikorita has historically never been able to learn. Could this be a hint that Chikorita’s move pool has been tweaked to prepare it for a fairy typing in the late game?