Ok yeah, this sounds like it isn't any real news.
This reminds me of the thread a while back about the same rumor, and that one ended up being nothing too.
I'm sure Hasbro doesn't want to be tied down to only using Sentai footage, but I can't imagine them cutting all ties with Toei. Even if the agreement is just rights to use older costumes and zords in new media. Like does Hasbro need to have an agreement with them for the Boom comics, since they use Toei costume designs? I assume so, and I don't see Hasbro burning that bridge to a point that it prevents them from using MMPR.