Kevin -
If you notice in Ashok's email, he stated "....for upcoming releases to follow soon:..", so the capture/replay and in-memory enhancements are not in the 16.0GA release. What is in the 16.0GA release is pretty much just what is covered in the NFG....although I have started using the New Feature Summary more as with all the changes in the ESD/SP's, there is a lot there.
One thought to also keep in mind (for everyone)....if a company decides to take a path of continuous innovation - you will likely see a smattering of new features/functionality released over time vs. huge major releases every 3-4 years. So, while SY was more of a "major release" style company, SAP is more of "continuous innovation" style...