Rift is apparently adopting the model Blizzard used of removing time limits on trial accounts. The main site for it isn't up yet, but joystiq has an article about it with the main site going live sometime later today.

http://massively.joystiq.com/2012/02...s-free-to-all/

Main Rift Lite site (not live yet as of this post): http://www.riftgame.com/en/riftlite