It's just a rumor ATM, and hopefully it will be debunked soon I can't imagine Disney Spending billions more to buy out another company in the same year (after all there was a 2 year reprieve between their buy out of Marvel (2010) and LucasFilm (2012). So yeah.
Honestly I think the rumor stems from the Fact Hasbro owns toy rights to Marvel properties & Star Wars .
However considering Disney works with Mattel more then Hasbro on Toys, and Mattel gets a decent chunk of its profits from its Mickey & Disney Princess lines, It would not be a good thing for them. *Only Disney Toys Hasbro Does are Toy Story & the occasional Board Game*
Plus Hasbro already has locked in agreements with companies like Studio-B/DHXMedia IDW, Shout Factory & Paramount for various forms of entertainment media. On top of the fact that they just launched the HUB network in 2010...
So yeah its probably nothing, but just in case I gotta say to Disney...
STAY THE BUCK AWAY FROM MY PONIES & BOTS YEA MONOPOLIZING SON'S A [YAY!]
So yeah Discuss, Panic, rage, joy, etc until Hasbro or Disney one Debunk or Prove.
Meanwhile I'll be praying to the Goddesses Celestia & Luna this forever states nothing but a Nasty Rumor.