The email had mentioned that version 10 was weeks away, meaning it should be next week, or the first week of july depending on whos schedule is followed. The email mainly talked about enhancements in debugging, plus a mention of a built in chrome browser for preview/testing. Here is a link to a promo video that was also in it.
http://www.nusphere.com/flash_files/js-debugging-v10.html?/C523/523196278216
I had tried phpstorm as well, but found the interface much more confusing. Does it work off the same principles of downloading a complete copy locally, or does it work off remote files from the server? I use Git quite a bit and phped (netbeans as well) doesnt work too well because of the local copy requirements.