This release fixes a bug with Vimeo support which would result in Vimeo popups opening in a new window. In addition, all of JCE MediaBox's javascript files are now merged into a single compressed file (uncompressed source files are still included in the package).
For users who have been using JCE MediaBox since prior to 1.0.10 (releases 1.0.0 to 1.0.9) it may be necessary to remove the twitter.js and/or twitter-src.js files in plugins/system/jcemediabox/addons/
A full changelog is available here