Here's the full info about the "Quake Forever" tournaments:
(they also host other games)

QuakeWorld
Layout: Team Deathmatch - 2 vs 2
Number of spots: 16 teams
Tournament layout: Groups -> Single Elimination
Bring your own computer: No
Prizes:
#1. 12 000 SEK + 6 000 SEK worth of products
#2. 6 000 SEK + 4 500 SEK worth of products
#3. 4 500 SEK + 3 000 SEK worth of products
#4. 1 500 SEK worth of products


Quake 3 (CPM)
Layout: Duel - 1 vs 1
Number of spots: 32 players
Tournament layout: Groups -> Single Elimination
Bring your own computer: No
Prizes:
#1: 8 000 SEK + 4 000 SEK worth of products
#2: 4 000 SEK + 3 000 SEK worth of products
#3: 3 000 SEK + 2 000 SEK worth of products
#4: 1 000 SEK worth of products


Quake Live
Layout: Duel - 1 vs 1
Number of spots: 32 players
Tournament layout: Groups -> Single Elimination
Bring your own computer: No
Prizes:
#1: 8 000 SEK + 4 000 SEK worth of products
#2: 4 000 SEK + 3 000 SEK worth of products
#3: 3 000 SEK + 2 000 SEK worth of products
#4: 1 000 SEK worth of products
(As it's not certain if QuakeLive will be released in time for this event, the game may be changed to Quake III Arena (VQ3))



Signup by sending a mail to quake4ever@dreamhack.se.
Submit the following information:
Game(s)
Given name
Nickname
Surname
City
Country (if other than Sweden)
E-mail
Cellphone number
Birthdate (YYYY-MM-DD)

Minimum age: 16 years.


The information was taken from DreamHack's "Quake Forever is back!" article.
Thanks Dronar for referring me to it.