As you can see, I have been busy!
This is my latest article on Noodle.com, which looks at typical reading and writing development, or Reading and Writing Milestones. It highlights what children should be learning, and when. Though less specific than the Common Core State Standards (CCSS), the goals do align with the Foundational, Reading, and Writing standards. As is mentioned in the article, the main caveat is that since reading and writing are not innate, these milestones are a rough guide, as what children know is dependent on what they have been taught.
Have questions? Ask them in the comments and I can guide you towards research, student writing samples, or other resources.