If you update to the next level license package, you will only pay the difference.
No specifics on release dates yet as it is difficult to ascertain. The theme release status page is http://www.appthemes.com/releases/ updated accordingly of which you may check from time to time.
Please help our moderating team work more efficiently by not sending us support questions via PM. You can read more about how AppThemes support works here. However, you can send a PM to follow up and remind me if I missed your support request/thread.
Thank you and have a nice day.
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