I think I would prefer if devlogs were automatically also put in this forum when you posted them. Or at least there could be a checkbox you could tick.
Alternatively (just brainstorming here), make it so that when I post a devlog, have a thread be generated here with either the full devlog or an except, and a link to the actual devlog on the project page where people can add comments and whatnot. The except would be written by the poster (have a separate textbook labeled Excerpt) or just be the first x words or whatever.
Also I like the idea of curated devlogs.