http://www.equestriadaily.com/2015/08/shatner-to-possibly-guest-star-on-pony.html Nothing is set in stone yet, but it's cool to see that it's possible. Also, old news is old.
I'm a little irked at Shatner right now. He's doing his "Shatner's World" tour right now, and seems to think that a hundred bucks is a reasonable price for the cheap seats. It's twice that for good seats. I mean, c'mon. He's cool and all, but he's no Patrick Stewart.