The Diablo III Forums have word that Blizzard's action/RPG is currently offline in North America for maintenance as
the promised new version 1.04 patch is installed, bringing the
new Paragon endgame to the action/RPG sequel (no word on whether this patch will fix the
Server Status Page which could be helpful at times like if it worked properly). The post includes
the full version 1.04 patch notes to check out while waiting for the game to come back online, which is currently slated for around 4:00 pm EDT today. The European servers are scheduled to start updating tonight and the Asian servers will be patched tomorrow, and this will prevent global play until they are all once again running the same version.