보스 기반 공격대 잠금 시스템: 플레이어가 같은 주에 각 보스의 10인 또는 25인 공격대 버전을 수행할 수 있습니다. 잠금은 개별 보스를 기반으로 합니다.
With today's Cataclysm announcement, Blizzard clarified how raid lockouts will work in Cataclysm. The raid lockouts are boss-specific, meaning players can kill bosses on either 10- or 25-player during the same week.
This means you could start the week as a 25-player raid and clear as far as possible, then finish up the raid later in the week as a 10-player group to clear the final bosses.
Earlier, the original post had some ambiguous language that could be interpreted as characters being allowed to do 10 AND 25-player raids in the same week, but this has now been cleared up.
Boss Based Raid Lock system: Allowing players to do either the 10 or 25-player raid version of each boss in the same week. Lockouts are based on individual boss.