Tested out 1.7a and it's working fine for me. Only issues, are the same ones previously stated with the previous version--htaccess & CKEditor browse server, preview not functional when "home" level page is redirected to root.
Otherwise looks great. Nice keyword & description addition. Hopefully a title tag and page slug there soon ;) :D
I like the way that the site's keywords and description are appended, thus, for "advanced" users that want only page specific meta data they can clear out the site's meta data and put it in per page otherwise it's filled in.
How can we help you test the auto-update feature? Right now I have it installed on localhost so I know that won't work, but if you have an upgrade ready to go and want to test things maybe you could let us know and we can upload to server to test the feature?