Minecraft Java Edition 1.20.2 was released today (Sep. 21). Sandlot does SUPPORT it with issues (https://www.sandlotminecraft.com/threads/tab-player-list-shows-players-out-of-order.38309/). Minecraft (Bedrock) 1.20.30 was released Sep. 19. It is supported by Sandlot. Java Edition: Find @c0wg0d's tutorial on setting up older Java Edition versions here: How to play a specific version of Minecraft | The Sandlot - A Family-Friendly Minecraft Community (sandlotminecraft.com)
It's been a while, so just a quick update: While it might seem like it would be a small update from 1.20.1 to 1.20.2 (for Java edition), it contains complex changes which have broken some of our more important plugins. We continue to monitor developments, periodically test, and even explore alternatives to current plugins. As soon as we're able to stably support 1.20.2 (Java Edition), we'll make those updates that day. Thank you for your continued patience, and please excuse the delay!
Players with Java Edition 1.20.2 can now connect to the Sandlot. The only issue we know about with 1.20.2 at this time is that the tab player list displays out of order. https://www.sandlotminecraft.com/threads/tab-player-list-shows-players-out-of-order.38309/ We are still exploring options to fix this.