Hi Xerionix.
Two factors will determine the deadline.
1) When itch.io sends through the payout money which so far is above $60 depending on tax. (It takes 7 days to approve).
2) The deadline will be made larger depending if Markiplier or any other big you-tubers make videos of it. However, the benefit of that is the cash prize will increase greatly.
I do plan to give the money away regardless though.
Also you should join my discord as i will release more info on there in time.
Thanks!
https://discord.gg/XBMauKV