I highly doubt they would, though I'd love to see it. I don't think they'd do such a thing as long as they still manufacture the Triaxis...and believe it or not the Triaxis is 18 years old!
It doesn't look like Mesa wears the Mark series on their hat like they used to. Since the Rectifiers came out its been Recto this, Recto that. I love Rectos, but as far as I'm concerned the Mark sound is "the Mesa sound". As of now they don't make any Mark amps, which means a new one is probably on its way.
Personally I think the Quad and Studio preamps were too good to be true. I doubt they made much profit off of either when they did manufacture them. Now at least they float around on the used market and continue to give Mesa a good name! 8)