Here are the patch notes for the 5/7 maintenance at 7AM PDT:

Classes and Balance

Control Wizard:

• Frost Wave: No longer plays the Level Up FX repeatedly when triggered.
• Spell Twisting Feat: This feat no longer resets cooldowns on powers that it should not.

Devoted Cleric: 

• Hammer of Fate: No longer improperly interacts with Hastening Light and the Hastening Light offhand Artifact, granting more Action Points than expected.

Hunter Ranger:

• Aimed Shot: Ranking Aimed shot to Rank 4 no longer causes Aimed Strike to be removed from your power list.

Content and Environment

• Campaigns: The level up wizard will no longer recommend players to go to the new campaign zones until level 70. Talking to Knox will still allow players to access the zones if desired.
• Campaigns: There are now warning messages to players below level 70 that campaign zones may be too difficult.
• Dungeon Delve Event: Resolved an issue wherein the event text for the ""Dungeon Delve"" event did not mention the necessity of using a dungeon chest key to obtain the rough astral diamonds indicated as a reward. In addition, the interact text that appeared when a player viewed the chest at the end of the dungeon implied that the chest would open during a dungeon delve event.
• Tiamat's Hoard: Donating may be done after it reaches 100%.
• Updated collision around Gauntylgrim Capture Points to prevent players from getting stuck in them.

Items and Economy

• Companions: Augment companions once again have base stats.
• Dragon Cult Pack: now Binds on Equip like other bags.
• Paladin Elemental Fire Artifact Weapon: The Aura of Truth class feature properly respects Crowd Control Resistance now.
• Professions: Mailsmithing: Resolved an issue wherein rank 25 mailsmithing armor kits were expecting plates instead of rings in their recipe.
• Seals: The tooltips on both Seal of the Elements and Seal of the Protector now specify where they may be used, what they may be used to purchase, and where they may be obtained."
• Unique items that are slotted in an item that is consumed through refinement or other means will no longer be marked as being owned so they can be claimed again.

User Interface

• Refinement: When a stack of refined items crit the proper RP granted will be displayed instead of displaying as though the whole stack had crit.