I just saw this on Tumblr.
These appeared in the latest episodes, strange huh? Kalos is also shaped like a star so it this foreshadowing for Kalos or something? Or is it just some sort of an easter egg?
So that finally confirms that Unova will be in XY.
But seriously, it might be foreshadowing something, yes. Also, easter eggs in Pokémon usually mean something.
I'm pretty sure it's basically just supposed to be a pentagram-like symbol, but without the circle so it won't offend the overseas market who find pentagrams offensive.
Gen VI will have you summon and worship Satan, Pokemon anime confirms.
GS ball 3.0?