At Lane Keister's recommendation, I'm listing the information in my Forthcoming Commentaries post by book. The original post lists them by series. I intend to update both posts whenever I get new information.
Note: I update these list whenever I get new information about a forthcoming commentary, but I'm not so good at removing forthcoming commentaries when they are published. So don't think the presence of non-forthcoming (because published) commentaries mean it's as out-of-date as that might otherwise suggest.