Rav Ovadia: Mashiah Will be Poseik Like Sepharadim
According to VIN News and YNet, Rav Ovadia Yosef Shlit"a said that Mashiah will rule like the Sepharadim and all will follow the Minhag of the Sepharadim when Mashiah comes. (You can see the video here at about the 50:00 minute mark.)
This is, of course, something that is obvious, and should be known to all already.
But for all you non-believers out there, let me attempt to prove it to you.
(הספרדי = 359 = משיח (עם הכולל
אשכנזי = 388 = למשיח (meaning the Ashkenazi will go to Mashiah, for the Sephardic Psak Halacha)
מלאה הארץ דעה את ה' = 878 = כמרן בית יוסף
But seriously, anyone who faults Rav Ovadia for this statement (besides the foolishness of faulting a Gadol Hador) is only fooling themselves. There is not one single Jewish group that thinks that the Psak that they currently follow will not be the Psak that will remain after Mashiah comes (barring, perhaps, some Ashkenazi Kitniyot-on-Pesah-eater-wannabes). Everyone thinks that their own particular minhag will remain. Otherwise, why would you hold that way now if you know that it will be changed later? Therefore, what he said is no different than what everyone else imagines in their heart, and has probably said from time to time.
(Also, even though there is a famous Haza"l that says we'll follow Beit Shamai's ruling in the future, I'm guessing that that will not happen immediately upon Mashiah's arrival.)