I am pleased to refer you to a new post at Concordia Academic on Walther's Hymnal.
Also, I note with pleasure that on the book's page on the CPH website the phone number has been replaced with a full-fledged "add to cart" button. Everything seems to be progressing well, thanks be to God.
Finally, I thank you all for your comments and criticisms on this blog so far these several years while I've worked toward this project. Your input has been a great help. I look forward to having your company as I continue to explore the lost shores and forlorn grottoes of Lutheran hymnody in the future, unless the Lord returns first. I look forward to that even more.