From the weekly newsletter:
Dear Citizen ,
Come Monday, you can test-fly five of Star Citizen’s latest and greatest ships for the whole week, and get in the game for free. What’s more, if you refer a friend and they end up backing Star Citizen, you’ll receive your very own Kruger P-52 Merlin. Spread the word and stay tuned for more updates on Monday- there’s never been a better time to jump into the 'verse.