In some form or another, yes. If it's too cumbersome for the inside cover, then it may just end up in digital format, either as part of the DVD menu, or as a PDF file. For the latter, you will need a computer to view them, since set-top DVD players can't read computer files.
And unless I do manage to squeeze the info into a small, thin booklet, this will have to be a feature available exclusively on the DVD.
Jonathan