I decided to update v4.2.0 installers to the latest nightly build (from stable branch), since we’ve fixed a set of annoying bugs during last two week.So there is nothing new yet, just fixes. But if you're using v4.2 in production, it's highly recommended to update it.
As usual, the latest build can be found in Downloads area.
P.S. The publishing process isn't finished yet. Track the build date there, it will be changed when publication is finished.