While the patch is likely to officially be deployed tomorrow, July 28th, we got a preview of what's coming thanks to the Hearthstone app being updated a day early on Android devices through the Amazon App Store.

Here's what's going to be included in the patch:

GENERAL

• Pre-purchase "The Grand Tournament" -- Starting late July, you can pre-purchase "The Grand Tournament" 50 card pack bundle from the in-game shop and unlock a special card back. The Grand Tournament packs can be opened in August when the expansion releases but the card back is available immediately!
• The following card backs have been added: -- Darkspear - Acquired by reaching Rank 20 or higher in Ranked Play mode during the month of July.

BUG FIXES

• Improvements have been made to Spectator Mode which include resolving the issue that could cause a card with a "Choose One" option to become stuck on screen.
• Fixed an issue with Rexxar's golden hero portrait animation.
• The game will no longer freeze on the splash screen after being away for a while.
• You can once again search for cards that contain diacritics without specifying their proper marks.
• Fixed an issue with volume sliders.
• You will no longer get stuck on the matchmaking screen after a Tavern Brawl with a friend ends.
• Various audio, graphical, and UI issues have been resolved.

As was to be expected, there are currently no balance changes. However, the pre-order for The Grand Tournament is going to go live on all devices, and some welcome bug fixes are included as well.