That's no rumor - they actually went through and changed it on stream (had to because it was set on MLB Network by default, before they wanted to reveal it). There were actually multiple (3) presentation styles last year too, although you couldn't choose - they were based on the home team market size, I believe.
Time will tell whether it's a selectable option this year (for both play now and franchise) - It was there in the menu but that's no guarantee it isn't a special dev option.
I suspect we'll find out for sure on this next week - perhaps as early as Monday with the Gamestop video centering around presentation.