Nero Sets Booktype?

I’ve been buring some video DVDs lately and just last night upgraded my Nero install to 6.3.1.25 and noticed something new. At the start of the burn (right after it reports what speed the burn is starting at), a line appears saying “Book Type automatically set to: DVD-ROM.” This is new…the previous version I was using didn’t have this notification.

Is this something Nero is now doing? I’m using an LG 4120b if that matters.