The hardcore A320-X virtual pilots will, of course, have the right to fly their advanced airliner in prepar3d V4 soon after its release. Upon its release next week, FSLabs will share the Beta Update to their testers team first, before the wide customers audience receive it. This will be a free update.
More information have also been announced by lefteris Kalamaras in FSLabs forumabout the A319-X project, and another product coming after.