Probably this is because Play do not have all the information as yet. As this is a Warner release the R2 is usually the same as the R1 (perhaps minus some special features if no clearance can be made) so I expect that it will be 1.85:1 and Dolby Digital 5.1. Strictly speaking though the special effects (CGI) for B5 was actually filmed in 4:3 so by getting this in widescreen we will actually be missing some of the picture.