Can we make updates during the jam time?
I'm not sure. You could make a separate project, post updates as needed, and upload here when ready.
I mean to the game whem i submit the first draft of it
Again, not quite sure. However, itch.io lets you make changes to your projects. I don't see why that wouldn't apply to projects in game jams.
So, just to make sure, there are no requirements besides it being related to cats?
Right