There is no maintenance tomorrow and no patch as far as I'm aware, meaning we are already ready to go for when the switch is flipped for Reaper of Souls.
The only way to get extra character slots is to buy Reaper of Souls, the standard comes with two extra & the Collector's Edition comes with 3 extra for a total of 5 extra for the CE. An extra stash tab is granted when you buy Reaper for any edition and you'll have to get it with gold.
lol guys use your brain and google, you can download D3 RoS early Beta binaries from ownedcore.
I wouldn't trust a filebeam URL especially one coming from ownedcore. There are direct download links you can get that use the same CDN servers Blizzards uses and have been uploaded by Blizzard.
And another: http://www.ign.com/videos/2014/03/19/ooqd-diablo-iii-reaper-of-souls-unboxing
Looks cool enough.
Necromancer? Ladder system? My bet is the ladder system, there's no way in hell they'd reveal a Necromancer class this close to release.
Link them.