The pre-patch has arrived on the PTR for all to test, with the development notes below. Unfortunately no testable Dracthyr yet! 

PTR (Source)

This Public Test Realm (PTR) is a testing environment for the content coming with the Dragonflight Pre-Expansion Patch update.

To see full details on what’s in the current build, please visit the Dragonflight Beta Development Notes thread.

Dragonflight Pre-Expansion Patch Development Notes

CLASSES

New Talent System

Mage, Priest, and Rogue available for all races

PLAYER VERSUS PLAYER

All ranged spell casting and healing specializations have a new PvP Talent:

New PvP Talent: Precognition – If an interrupt is used on you while you are not casting, gain 15% Haste and become immune to control effects for 4 seconds.

Updated PvP Talents

USER INTERFACE AND ACCESSIBILITY

New HUD UI