The Roberts Space Industries website has word that those who attended DragonCon 2014 over the weekend received codes to activate a special five-day free trial version of Star Citizen's Arena Commander module, offering a chance to check out the upcoming space combat game (thanks charlie brownau). There doesn't seem to be a way for others to participate, but it's interesting they feel the game's progress warrants this already. Here's word on how this works:

Roberts Space Industries is proud to offer DragonCon 2014 attendees with a free flight week-end to try out Star Citizen’s Arena Commander module! If you have a valid code given to you on the floor of DragonCon 2014, paste it below to activate the Dragon Con free flight weekend on your account!

With this pass you will be able to download and install the game, walk around the Hangar Module and sit in an RSI Aurora trainer ship that you can then take into flight in Arena Commander. Once activated the pass is valid until September 5 2014!