Over on the Just Flight Facebook page, some new previews for their upcoming A300 have been released. These previews show the progress being made on both exterior and interior textures. The textures are in an early development stage, but look to be coming along nicely.
This aircraft is also going to be developed for XPlane, and the A300-600 and A310 are also being looked at for development after the B4 is complete.
To keep up to date with the development of this aircraft, you can go to the product page and also sign up for email notifications on release.