In an interview with IGN, notch briefly went over details on the creative mode for Minecraft Servers, as well as gameplay options.

It had me excited.

“There obviously are players who prefer the less gamey aspects of Minecraft, so the Adventure Update will also include a fully fleshed out Creative mode where you can access all blocks in the game, take no damage, and can fly if you desire. You’ll even be able to set this per-player in multiplayer in case you want your moderators to have the ability to easily navigate the map and deal with griefing.”

– Notch