A new Quake III: Arena tool has been released, called "Fightclub" which is a configuration utility for Quake 3: Arena that allows you to do a bunch of stuff.
ShellShock's Crater has released a new version of their easy to use configuration utility for playing offline called Q3Offline.
A nifty tool called Quake 3 Control has been released for the public, Quake 3 Control is a remote admin tool for a Quake server. Currently Quake2 and Quake3Arena are supported, QuakeWorld support will follow soon.
Cached.net have posted a mail they got from mapper Sten "ZTN" Uusvali, probably Estonia's most famous export, about converting some of his old Quake and Quake 2 maps to Quake 3.