In the blog post they're mentioning though, Harmon pretty much flat out said that everything's still in the normal timeline... if I remember correctly.
But what is the normal timeline? According to my theory, the normal timeline could be one of three timelines, not counting the supposed “Prime”.
Timeline 1: Likely. Everything is normal. Timeline 2: Unlikely. Shirley leaves the group. Timeline 3: Likely. Britta and Troy have a small ‘moment’ in this timeline which leads to another small ‘moment’ in episode 3. Timeline 4: Unlikey. Britta gets engaged to the pizza guy. Timeline 5: Impossible. Pierce dies, Jeff loses an arm, Annie in rehab, Shirley’s a drunk, Troy destroyed his throat and Britta has a blue streak in her hair. Timeline 6: Likely. Everything is a little awkward, but otherwise normal. The “Prime” Timeline: Likely…. EXCEPT for the fact that Pierce never mentioned banging Eartha Kitt.
Yes, I know I’m over thinking this, but overthinking is fun. Also, I hardly ever get to use the words “According to my theory…”.