I'm in the process of downloading it right now. I used to go and buy the disc copies each year, but the trade in value on them quickly drops to nothing, or they can't be traded in at all. So I just wind up having the physical discs lying around taking up space. (Still trying to get rid of MLB11 and MLB12 The Show versions). Since sports games are things that are always released every year, there really isn't a huge market for trade in and used sales. So it made sense to me to go ahead and download a digital copy as it just takes up less space for me.
I started the download (24.7 GB I believe, split into a 4.7 MB Online Pass file, an 11.xx GB Additional Content file, and the 12.xx GB Main Game file) at about 12:15 this morning. The online pass and the Additional Content files are downloaded, and I'm at 14% on the Main Game file. Getting around 2 MB/s download speed.