Found some things not listed on the front page but that are documented as changed on WoWhead. Old things are in italics, changes are in bold
Arcane Brilliance/Dalaran Brilliance: Infuses all party and raid members with brilliance, increasing their maximum mana by 5401/2126 and spell power by 6% for 1 hour. If target is in your party or raid, all party and raid members will be affected.
Conjure Mana Gem: Conjures a mana gem that can be used to instantly restore 29973/11800 to 31509/12404 mana.
Arcane Missiles: Launches waves of Arcane Missiles at the enemy over 2 sec, causing 354/358 Arcane damage per wave. Each offensive spell you cast has a 40% chance to activate Arcane Missiles.
Scorch: Scorch the enemy for 705/670 to 835/794 Fire damage.
Overall...I have no clue what to make of these changes. Can anyone with steady access to beta confirm/deny any of these?