@jimp:
Before, it was uploading update images twice. Once under the "real" name and again under the latest-* names, and it didn't upload the version files until the end, so during any snapshot upload it would have been possible to update at some point and either get a partial file or one that didn't match the version.
Now it simply does a symlink to the already-uploaded file and copies the version after that. Much faster, less prone to error, and saves a bunch of bandwidth for each snapshot run.
Way cool. Thank you for the update and improvements.