While Atticus and Plottr aren't exactly integrated, we do have a tutorial for uploading Plottr outlines into Atticus: https://youtu.be/1JnfH4dn2BY
We do indeed have plans to add outlining and plotting functions to Atticus, but they're still a little bit down the road (though the goal is to add them this year!). While they will have some similarities to what Plottr can do, they likely won't be quite as widespread or in-depth as what Plottr itself provides.