We just did a major core and database update, you will find may BC instances have been fixed up, more spawning has been done in some of the new areas, more new items and loots are also updated.
On Netherstorm, Epic Shops and Trainers have now been spawned in Stormwind and Silvermoon City as well now. This will help prevent overcrowding in the existing epic shop areas in Ironforge and Orgrimmar.
Rates have also been return to 15x on Netherstorm which is our normal rates.