SpringRO beta started not too long ago. New Ragnarok Online server. There's integration with RetroAchievements where you can get a badge on the site, and some cosmetic rewards in-game for participating in the beta and getting to level 30. Full server launch is soon and will also have achievements sets in-game and on RA for leveling different classes, collecting hats and cards, etc. One of the devs is also a dev for the HorizonXI Final Fantasy 11 server, which is great, so I have high confidence in this one.
There's been a ton of people who have never played RO checking it out from RetroAchievements and it's been really fun to help guide them and see their reactions and questions. I've played the game on and off since launch (got a disc in the mail even), so I'm not the most knowledgeable, but I feel like a real oldhead. The population has been consistently around 100 players at peak time, so I predict a few hundred on launch when their progress won't be wiped.