Originally Posted by
wgscott
If I am reading their propaganda correctly, the new cranksets have a +2.5mm chainline that requires you to get the matching front derailleur (or maybe both, at least in the case of the Di2 version). They are also going to introduce in-line hydraulic brake levers later in the year.
The higher-end 48/31T crankset seems like an unusual gearing choice.
I'm guessing that is a typo. Shimano has had several of those in the last year...some of which made consumers very angry (wheel names and wheel depths being misleading AKA wrong)