Geoff, if MF is saying the LP's will be mono, it's highly doubtful Modern Times will be one of them. Mono reissues are always of albums that were originally available in mono, meaning 60's releases. I wouldn't mind contemporary recordings being mixed to mono, but that just isn't done. At least, not by labels like Dylan's Columbia. Some hip indie labels/artists who think mono is cool is a different story!
There was a lapel button made back in the 70's that read "Back To Mono". I saw a photo of Phil Spector wearing one---he was known for his mono "Wall of Sound" recordings, which were what Brian Wilson tried to emulate in his Beach Boys mono mixes. Brian also used Spector's "Wrecking Crew" musicians on his recordings, so like Spector did he want his productions to sound.