And since the next MBP will be a redesign, that's their opportunity to ditch the optical drive. If they don't ditch it with next year's redesign, they'll have to wait until the next redesign after that in 4-5 years. They're not going to keep it around for that long when they want everyone to move to the iCloud.
Plus I think if they continue to offer the SuperDrive, it needs to be updated to modern times, i.e. it needs to support Blu-Ray. I don't think Apple cares about Blu-Ray though, so they'll probably just ditch the optical drive.
Remember the redesign is just a rumor, nobody really knows just yet at all as to what will actually happen.
Though I do agree, if Apple does want to keep the ODD, might as well just add Blu-Ray...as there is software that FINALLY allows you watch Blu-Rays under OS X.