We just released some additional improvements to the threaded forum interface. At the same time we made the threaded view the default view for new users and visitors that are not signed in. If you prefer the chronological view, you can, of course, still use it or switch between them as you like.
On top of this there were a bunch of other minor cosmetic changes and some bug fixes. As usual, please let us know if you notice any problems or if you have feedback or questions about the changes.