Even though Arcade Darts is still available, Qwikrazor has published that the game Hot Brain (only available in North America) can also be used to exploit the PS Vita firmware 3.36! He also released ARK for that exploit within hours of the announcement.
While you need yet another base game for the Arcade Darts exploit (similar to Patapon 2 requiring another base game), Hot Brain can be used as its own exploit (like Numblast).
So you now have to decide if you want to buy Hot Brain and be done, or buy Arcade Darts and yet another base game (e.g. UNO).
If you already have an exploit game, then you don’t need another one. One is more than enough!
Tutorials to both games will be released soon, so stay tuned!
Lets hope that this will delay Sony’s PS Vita firmware 3.37 (3.40?) even more, so you are able to enjoy best of both worlds: Hacking & Online services.