Eyo Finmine community,
With how long this 1.13 stuff is taking, you are probably wondering why we haven't updated yet. At least, if you've missed the shoutbox messages, the discord announcements or the explainations of our staff. I'll try to explain what is happening on this page as well.
Finmine, as many other servers, use plugins. Plugins are basically Mods that can be used on multiplayer servers to enable special features, such as:
Chestshops, warping, jobs, anti-cheats, multiple worlds, inventories and much, much more.
To enable most of these plugins, the server needs a software package that can understand what to do with them, as regular Minecraft doesn't know that. The one we use is called Spigot (some might remember CraftBukkit or just Bukkit).
Without Spigot, we can't use any plugins and we can't add it in later after the server has reset. It has to be enabled from the start. Think of it as the foundation of a house. Everytime Minecraft updates, Spigot breaks and they have to update it with the new features of the game. This is because Spigot is not created by the Minecraft Developers, but by a large group of volunteers from the community. These people are very talented, but they don't get paid for this and work on everything in their spare time.
Spigot currently has a Development Build (Dev Build) of Version 1.13.1. "Great! So why not update Finmine already!"
Dev Builds are not meant to let your server run on it, but are meant for plugin developers to get used to the changes so they can update their own plugins. While we could start updating Finmine with the Dev Builds, they are usually unstable. Spigot also warns for this.
Re-using the 'foundation analogy': Think of the foundation of your house having been only partly built. Sure you could use it and it might work, but there is also a change that your house will collapse when only the slighest thing happens, such as rain... In this recent case, the Spigot team doesn't recommend using old maps for the new versions yet. While we will create a new map for 1.13, we will still keep a number of old ones for the Minigames, Creative worlds and Worldhub. So this means we'll have to wait.
The more updates Minecraft releases, the more complex it becomes and the more work the Spigot team has to do to enable plugins, while also making sure the base Minecraft game works. The fact that 1.13 is a pretty big update as opposed to 1.10, 1.11 and 1.12 doesn't help either.
Hopefully this clears up what is happening and I won't have to answer the same question in multiple places every time it is being asked.
If you have a friend that has had this question as well, please refer them to this page, the discord announcements or our wonderful staff!