Hearthpwn

Update 5:17 PM EDT: Database has been updated with new card images. 

Hearthstone Patch 6485

A wild patch has appeared on the download servers, and it has some treats! This patch is not yet available on the Battle.net launcher.

This patch includes Leeroy Jenkins and Starving Buzzard card nerfs, card backs, and some updates to misc. Naxxramas strings.

Card Changes

• Leeroy Jenkins mana Cost is now 5, up from 4.
• Starving Buzzard mana cost is now 5, up from 2. Attack is now 3, up from 2. Health is now 2, up from 1.

New Card Backs

The previously announced Plundering Pirates card back is in, and it has two friends- The Dalaran Flame card back, and a "Coming Soon" card back. Although no images of the Coming Soon card back was found in the client, there are references to them.

"Plundering Pirates"
Season 6 (Sept 2014)
"Dalaran Flame"
TeSPA - License Detected

The Dalaran Flame card back is the previously seen "TeSPA" card back, and it is rewarded from a licensedetected trigger. A license trigger activates when your Battle.net account activates a game/purchase code/key. This trigger was also used in BlizzCon 2013's Elite Tauren Chieftain and the Diablo III Reaper of Souls game license "Reaper of Packs" card pack to grant those rewards. It is possible this card back will tie into a TeSPA promotion, or will be a reward to TeSPA chapters; but this is pure speculation.

The "Coming Soon" card back doesn't have any data associated with it, but it too is triggered by licensedetected. Perhaps it is for the Warlords of Draenor card back, but there is no way to know for sure right now.

Quote from HearthPwn

• Card Back Path: Assets/Game/CardBacks/IceCrown/Card_Back_TeSPA
  
• Note: dalaran flame cardback
• Trigger: licensedetected
• Description: You have earned the Dalaran Flame card back!

String Changes

Not incredibly important, but there were a few string changes to Naxxramas shop descriptions. They no longer mention the Naxxramas opening event sequence since it has concluded.