VMware vSphere 6.0 is currently in a public beta which means anyone interested in testing and learning new features can download the bits and read on new features.
However, the beta program is under NDA which means you are not allowed to spread content to anyone not part of the beta.
This was true until VMworld US 2014. At VMworld VMware revealed some of the new features of vSphere during the keynotes. Also some breakout sessions gave detailed information on vSphere 6.0 features including vCenter Server. Some published blogposts about these new features.
I checked with VMware about what can be published and what not:
- You can blog, Tweet, present etc. anything that has been told at VMware which was clearly not under NDA. Like info told in breakout sessions.
- Features of vSphere 6.0 not mentioned at VMworld are still under NDA.