From Red Planet's website:
"Thanks for your patience, but we've now decided on the finalists for the Red Planet Prize. The quality of entrants has been amazing and it's been incredibly hard to decide on those to make it through. Those that haven't made it, take heart. With two thousand entrants we had to be extremely exacting - so do please try again next year!
Over the next week, the finalists will receive requests for their full scripts. We can't, unfortunately, individually reply to everyone else, but do keep writing and thank you."