The Keynote felt a bit empty to me though a lot of stuff they already "mentioned" in the announcement showcase was discussed a bit lightly. That said it still had enough to offer to warrant its existence with reaper, male viera, etc.
The Media tours in Sept/October is where we will start seeing most of the action in terms of new info.
Given that 6.0 will be ending the most major story arc its understandable they cant say as much as they might otherwise in other expansions. Atleast until 5.55-5.58 is out.