Here's a look at the things he revealed:
Some consumer Radeon RX Vega cards will be faster than the machine learning oriented Frontier Edition.
Radeon RX Vega will be shown off at Computex, but it will not be on store shelves that week.
The watercooled Gold edition of the Vega Frontier Edition has more thermal headroom that could help in some scenarios. There is a slight clockspeed difference between the water and the air cooled version.
The Frontier Edition final production board has two 8-pin PCIe power connectors.
To realize the full potential of the Vega architecture's High Bandwidth Cache Controller (HBCC), games will need to be optimized to use larger datasets.
Raja says other stuff like the HBM2, Rapid-Packed Math, or the new geometry pipeline have the potential to really fundamentally improve game development. But it will take time to master these things.
Frontier Edition has two stacks of HBM2.
There may be a 16GB HBM2 version of the Radeon RX Vega.
HBM2 is offered from Samsung and SK Hynix, production is ramping to meet the level of demand that AMD believes the Radeon Vega will see in the market.
Vega is both a new GPU architecture and also completely new SOC architecture.
Radeon RX Vega comes with "a few other goodies" he can't tell anything about just yet.