Skyblock has seasons much like Survival and each season usually lasts around a year. Right now, Skyblock is almost reaching the year point and may be getting a reset in around 3 - 6 months. Skyblock has had multiple resets/seasons as we are currently on season 7. Just wait a few months, then a reset is bound to happen.
I honestly think its time for skyblock to get a reset in a month or 2. The server has been getting less and less attention and there are an increasing amount of things breaking. Its also getting repetitive and needs some new updates.
Skyblock, Creative, KitPvP and Islands will likely be reset soon. There’s no date(s) set in stone, and ultimately no official mention of it to my knowledge, but I do know they will all eventually be reset, possibly soon.