The new grade-by-grade draft of the core standards lays out what students should master each year from kindergarten through eighth grade. Here, reformatted from the last page of the draft, is a thumbnail version of that progression:
The plan is for the final version to start each grade with a section on "Developing Coherent Understanding." That looks as though it may explain how the topics within a grade reinforce one another and build on past work, but in this draft, the text below that heading just says "[Temporarily removed for editing.]"
Over the years, I've heard many parents wish for an overview of what to expect year by year, both to plan extra help for their children and to have a sense of whether classroom instruction is falling behind. This draft offers a pretty robust response to that desire.