Wow! Naturally the next question will be, which version of Squares is going to get Pluto's endless marathon treatment? Last I checked, I believe Marshall's version is currently owned by Amazon (for they acquired the MGM library sometime back, didn't they?) and the Bergeron version is owned by CBS. Knowing who owns and operates Pluto, my money is on the latter.
EDIT: I totally forgot about the 5th Grader channel whose reruns are owned by MGM (They added the reruns of the 1/2 hour syndicated version recently, too). I'm still going with Bergeron's version, but I won't be disappointed if Pluto surprises us with the zingers of Paul Lynde & friends instead.