Once testing has completed for the new software, upgrading will take place later today. Some changes may be noticeable before the forums temporarily go offline.
One significant advantage of this new software is that it should be fully responsive and therefore work a whole lot better on phones/mobile devices. Tapatalk should still work, but if you tend to browse the forums from your phone, consider giving the main forum site a try now
Updates are now all complete, and all the notable functionality from the previous forums should be in place.
If you notice anything that doesn't appear to be working as intended, or have any questions regarding changes in functionality, feel free to post here.