Duo Lon is now released and with him, comes a new patch with some absolutely massive changes to the game. The whole patch document is a whopping 18 pages of buffs and nerfs, alongside a few general additions and fixes to trial mode in accordance with new character changes.
If you want to read the full list of changes, follow this link.
Given the scale of adjustments, you should expect tier lists to shift quite a bit, and you might have to learn some new combos for your characters, because some old ones might no longer apply. Krohnen and B. Jenet in particular seems to have been hit pretty hard.
If you just want the quick summary of major changes, SNK has pointed them out in their video released a few days ago!