The changes made for Classic CO are as follows:
1. No DB Mall
2. No Battle Power
3. No DB leveling
4. DBs cannot be used to open the 1st socket on non weapon items, or 2nd socket for weapons.
5. No Talisman
6. Toxic Fog is removed from the Ninja skills
7. Gems drop rate from monsters increased
8. PKing is allowed in Twin City
9. Equipment Bonus quests will be removed.
Other than this list, the features and functions in the current CO will be available in the upcoming release.
Server wise, we are planning on 2 servers initially, and there will be 1 hosted in both America and Europe.
As for the release date, the tentative release date (as of 10/27) is November 19th. This could change if something goes wrong, but that is where we're aiming at this time.