Funnily enough I assumed the same thing since it would be reasonable to expect the RC to be displayng all the features.
The FE in his response said "It's a release candidate, which means exactly that - a candidate to be the release version. It's rare for the gold code to be exactly the same as the first release candidate, there are almost always some alterations to the final version."
So it could be but it might not is my interpretation of his reply! Your point is nonetheless well made and I think Home Premium is likely to be for me.