Update 6 July 2021: We have updated to 1.17.1. This is a minor but important update. All users are advised to upgrade. Dear SpigotMC Community We are pleased to announce the first builds of Spigot for Minecraft 1.17 are now available. Although this is a moderately sized update overall there are some major changes and very important points to note, so please read the following carefully. Java Version Mojang has decided to make Minecraft 1.17 require Java 16 or later. As this is not an LTS version, it is not available by default in the repositories of some popular Linux distributions. You may therefore have to manually install it from a third party such as Azul Zulu. If you see an error message that looks similar to Unsupported Java detected (55.0). This version of Minecraft requires at least Java 16. your Java version is incompatible and you will need to upgrade. If you are using a shared host you should contact your host for instructions on how to do this, otherwise if you are hosting yourself you can check your java version with java -version. If you have problems with plugins after updating Java you may be able to temporarily work around this by adding --illegal-access=permit straight after java in your command line. Please note however that this is a temporary workaround and might not work in future Java versions. Caves and Cliffs Mojang has delayed many features, including extended world heights, generation changes, and certain blocks/items to Minecraft 1.18. Although most of these features are still accessible in 1.17 through the use of either the experimental datapack or commands, and Spigot provides APIs for them, it must be remembered that these features are experimental/disabled for a reason. You are welcome to test them, report Spigot bugs, and contribute API, but be cautious and wary of bugs and the potential for future incompatible changes. There is every chance a world created with the experimental datapack will not be able to be upgraded to 1.18 when it is released. You also cannot remove the experimental datapack once it has been added to a world. Backups Please make sure you have recent and tested backups for your server before upgrading. As always it is not possible to downgrade your server to an earlier version. Upgrading Although upgrades from between any two version pairs are technically possible, it is recommended that all upgrades are conducted from 1.16.x. This means that you should first upgrade your world completely on 1.16.x using the --forceUpgrade server argument, and then do the same on 1.17. Bug Reports If you are reporting a bug to JIRA, please make sure that you read the guidelines and have compared the results between Vanilla & Spigot, and also the 1.16.5 versions before reporting — this speeds up the process for us immensely during this stressful time. Please report bugs, or issues you think might be bugs, to JIRA and not in this thread. Developers Please see the below posts. A Plea to Those Distributing Spigot Jars Whilst we do not and cannot condone Spigot jars other than those officially sourced via BuildTools, this is a plea to those who do distribute jars to please ensure that they are kept up to date. Too often we see users running the first build of Spigot for a particular Minecraft version when it is dozens-hundreds of builds and several months out of date. This is detrimental to the entire community. It is detrimental to users of those builds who experience bugs and crashes; it is detrimental to plugin developers who cannot take advantage of new API; and it is detrimental to us who have to deal with the consequences. So please, if for whatever reason you are distributing Spigot, please ensure it is kept up to date. Re: Expectations & Entitlement Almost a year ago I wrote in the 1.16 release thread about how disappointed we were in the attitude displayed by many users. I just wanted to draw attention to that post again, first to say thank you for the many kind messages then (they really mean a lot), and secondly to say thank you for the improvements in behaviour this time round. Please remember that an update is not a singular thing that begins or ends with this post. An update is a large commitment and unimaginably stressful period for everyone which lasts for weeks and severely disrupts normal life. We ask you to please keep all this in mind in all your interactions over the coming weeks, and thank those that are already doing so. Closing Notes Each release represents the culmination of hundreds of hours of effort, so if SpigotMC has helped you in any way, shape, or form we encourage you to leave a donation, contribution, or nice message. If nothing else, at least please make sure that any bug reports you may open are polite, clear, specific, and have been tested thoroughly both without plugins and on Vanilla. Downloading In order to get 1.17.1, simply run the latest BuildTools with the required arguments. Please make sure both your BuildTools and Java versions are up to date. There may be mandatory BuildTools updates throughout the 1.17 release cycle, so it is good practice to ensure that you are always using the latest version. You can download the latest BuildTools from this link. Code (Text): java -jar BuildTools.jar --rev 1.17.1 If you haven't used BuildTools to create a server jar yet, it is suggested you first read the 1.8 announcement and the BuildTools Wiki. BungeeCord is available in the usual location: https://ci.md-5.net/job/BungeeCord/ Enjoy, ~Spigot Team PS: Join our Discord.