The majority of releases on this forum are like a default. Meaning, Standard items, mobs, quests, npcs, and maps should be good to go. Any customised, or new content will not be added in. Safe bet is usually anything before 2010/2011 is in the releases. Some releases are based on private servers and will have custom items, maps, skills, and mobs. If you want to start from scratch, i recommend an Athens or Odin release.