All good points brought up. If they game has been ported to a BD, then maybe they are adding the extra "downloadable" contents to added roster of available tracks.

It's interesting that you say that the pulse DLC has been released, maybe they were converted for WOHD instead? Saves time, and all they will need to do is just update the graphics while keeping the design the same.

I mean 8 tracks for a BD game is very tiny indeed, hence the reason why it was going to be a downloadable game in the first place. But as usual, only time will tell.