You can now play Minecraft 1.17 new snapshots online with friends! We have recently added 21w08b from February 24th, 2021 and 21w07a from February 17th! We will be staying up to date with all new snapshots as they are released through Mojang. Our hosting here can easily let you do this.
A little about the 1.17 Snapshots from Minecraft:
Grimstone can be found in the deepest parts of the underground and is slightly tougher to mine than normal Stone.
Like Blackstone, Grimstone can be used to craft basic tools, furnaces and brewing stands.