All of our themes will get updated to 4.4 as soon as IPS release the official version. This means, we're in theme development mode when 4.4 gets release, and themes will slowly (depending on the theme resources) process out to the ThemeTree store and IPS marketplace.
Note: The new upcoming theme called "Up" will still be processing when 4.4 gets officially release. We're still in the process of making the new changes to the theme and everything else in our framework.
If you've any questions, please feel free to contact us at email@example.com, and we will get back to you as as soon as possible.