@ckp, Yeah its in the game details screen only, which I also have off. You can turn it back on, or do what I do and bind the game details screen to a controller button, I have mine on the back button. That way I only see the game details screen when I want to choose a rom version or favorite a game etc. Jason is going to integrate a popup eventually when you select a game with multiple versions but it wont make this release unfortunately. You can also set region priorities in launchbox, for example USA and it will always load that version if it is available.
Hope that helps.