Anytime I can pour one out for the Vita, it's a good day.
Well, it's not a great day for the Vita for sure, but it's nice that we can at least remember the good times we had with it on a regular basis. All good things must eventually come to an end, and if you were playing Phantasy Star Online 2 in a supported region on the Vita, you're in for a rude awakening.
Sega has revealed that they plan to shut down servers completely on August 19: after that point, no more Vita version after seven years of service. As Gematsu points out, there is a concession program for users who want to swap. If you log in on PC, Switch (cloud), PS4, or PC (cloud) before August 19, you'll net half your AC and SG points, added together, in the form of SG.
If the Vita was your weapon of choice, good luck! You probably knew this day was coming, and according to Sega, it allows them to free up more resources to support the game elsewhere (like the western versions). This has been a pretty commonplace strategy, with the Final Fantasy XIV team ditching the PS3 in the past, and the original Destiny crew moving away from the prior generation to focus on PS4 and Xbox One.