This is from the 2.0 Main Document.
Among our new plans is the fundamental reworking of in-game maps. As part of this process, there will be a period required for switching over to a new client and new servers, after which there will be a large transfer of data when service is brought back online.
This was in the 2.0 Outline pdf

1. A complete redesign of current repetitive maps
2. The implementation of a new graphics engine
3. A new server system designed for increased speed and performance
4. A fully renewed user interface
5. The expansion of in-game community content
As you can see SE has stated in a few places the server system is being replaced. I'm surprised more things don't cause disconnects as they are obviously quite unstable and have been since launch. Look what happened when they threw in the inns. They can't put certain features in because of said problems, which has been stated multiple times on the forums when asked why there is no mail system or better markets/AH ,etc and to wait until 2.0 to see what happens.
Yes we all know waiting until 2.0 is a pain....It really annoys me as well, but I signed on knowing the game was gonna be like this until then.