The Dream Team Developer Cold Bird & VF published today 6.20/6.35/6.39 Nightly Build. This is not a normal Pro version such as Pro-B6 but a nightly. The nightly build includes new features that have not yet been tested extensively enough so that they can appear in an official Pro version. The Nightly is sort of a pro beta, new features will be tested on the Pro-XX so that they can be published as official later. Daily at 01:00 clock is
here by a bot that has been programmed by Cold Bird, provided a new Nightly version.
USE AT YOUR OWN RISK! NIGHTLY BUILDS ARE IN NO WAY SUPPORTED!
Source
так называемая Pre-Beta.