I took the PSF class this week and I'm reviewing materials to prepare for the assessment. While reviewing the blogs on scrum.org, I noticed that some concepts (although still being taught) have been removed from the official scrum guide. (IE...pigs vs.chickens, release planning & burndown) Is it a fair assumption that those will not be covered in the assessment?
The assessments heavily, but not solely focus on the Scrumguide. While the Scrumguide is the "rule book" for the game, you are not necessarily a good "player" just because you know them. It is also important to know how to apply those rules in practice. Don't worry too much about the assessment, focus on becoming a good Scrum practitioner. Then you of course have to know about best practices.