A publishing plan functions as an organizing tool and also as a road map to help you achieve your research and publishing goals. You'll use it to flesh out your research question and think through the details of your project, such as:
Developing a Publishing Plan - Penn State Libraries
Your Publishing Plan - Deakin Libraries
A How-To Guide for Academic Writing and Publishing: from Sage
How to Write a First-Class Paper from Nature
Publishing Guides for Academic Authors from Cambridge University Press