The Grand Tournament - Hearthstone

The Grand Tournament

At a glance:

1. When - August 2015
2. 132 New Cards
3. New keyword "Inspire" - activates after your Hero Power is used
4. Pre-launch Offer - 50 packs for USD 49.99 and a new card back
5. Arena - chance of either Tournament, G&G or Classic card pack

If you ask me, be prepared to spend more or grind or be overrun.