From a different perspective of the topic, I am just as interested to see how AMD structure their presentation as I am in the results.
E3 is such a huge marketing opportunity and they really need to nail it. Personally I am not expecting the 9900k to be dethroned for gaming, as I would have expected to see a clear cut benchmark at Computex if it did, and I will be extremely interested to see how AMD counters this if it is true. They clearly want to drop the 'budget brand' identity that has been built up, so picking the right things to talk about will be extremely important.
I hope to see some information on latencies and overclocking. Navi is interesting, but I fear they might not focus on Ryzen enough. If AMD really do have game changing components then they need to land a few knockout blows.