The QUAKE LIVE Website outlines plans to release six new maps for id's free multiplayer shooter over the next six weeks, kicking things off with a remake of Hidden Fortress (thanks Voodoo Extreme). They offer some screenshots, and the following explanation:

We're kicking off our "6 new maps in 6 weeks" campaign with Hidden Fortress. Although new to QUAKE LIVE, this arena first appeared in the Sega Dreamcast version of QUAKE III Arena. Already considered the best new arena created for QUAKE III Dreamcast, we chose to make very few changes in bringing this classic map to QUAKE LIVE. The arena was originally created by Martin Kaai Cluney, a designer for Raster Productions. Kaai is now a designer at id Software working on the RAGE team. Hidden Fortress is a medium sized map with three main rooms - perfect for 6-10 player team deathmatch, clan arena and free for all gameplay. Although we chose to start with a classic map from the Dreamcast, we'll be debuting a mix of new and classic maps in the weeks to come.