Yea sorry, no Quake IV logo yet :P
With Unreal Tournament 2003 safely on store shelves Id Software focus surely must be on the successor to Quake III Arena, which just recently has turned 3 years old. Kombatant form our forums came across what looks like Quake IV concept videos where bot moves are shown. Planet Quake also has a few pages of wallpapers inspired by the upcoming game.
We look forward to hearing when this game enter beta and if anyone has more background information on Quake IV gameplay please comment!
Video: 6 Quake IV videos + codec
View: Quake IV Wallpapers