Looks like the casino changed their logo on the reverse bottom right of their slot cards. Previously was "Indiana Grand Casino" and now says "Indiana Grand Racing - Casino". So far have only found the new logo on the base level black/purple cards, if anyone comes across any other levels with the new logo please let me know and/or send scans.

Here's a link to scans of the new card on the ChipGuide
http://www.themogh.org/cg_showpic2.php?cg=079359