#0 - May 9, 2008, 8:07 p.m.
* All 25 man raids in Wrath will also be available to complete with 10 players. This is so that more players will get to see end game content (Even the Arthas encounter will be available as a 10 man raid).
* There will be completely different loot tables for the two different raid types. They will also be on separate cool downs, so players could fight in both the 10 man and 25 man raid on the same day if they wish.
* The mounts available to buy in Wrath will probably be able to take passengers. These mounts will also work in the old world (Provided they are land mounts), so players can give low-level characters a ride! The new mounts will also be slightly faster, around the speed of the Armored Netherdrakes.
* All 5-man instances in Northrend will feature Heroic modes, and the loot tables for the 2 modes will be totally separate. Heroic dungeons will have their own "Tier" of armor completely unique to that level dungeon.
There's Much more to be seen, check it out here:
http://www.worldofwar.net/n/413356/breaking-news-blizzards-wrath-of-the-lich-king-presentation