TAB

• Added 1.21.9 support
• Added missing config conversion
• Fixed warning when belowname / playerlist objective number value is a number that does not have quotes
• Performance improvements
• Fixed magic codes not resetting on new color code when MiniMessage is present
• Fixed prevent-spectator-effect feature sometimes not blocking gamemode properly
• Fixed memory leak
• Added support for new 1.21.9 object components, more info on wiki
• Removed 1.5.x and 1.6.x support
• Removed fallback implementations on unsupported Bukkit versions, which didn't work well anyway. Now the plugin won't start at all.
• Fixed client warn when sending tablist update packet too quickly without player being in tablist yet on BungeeCord (Bukkit is still affected)
• Added %uuid% placeholder showing player's UUID (may come in handy with new head components)
• Fixed nametag prefix/suffix being affected by team (name) color unless overridden (it will stay white now)
• Fixed empty message being sent into chat when using nametag toggle command and toggle message is empty
• Added config option to disable MiniMessage support (may come in handy when trying to use new 1.21.9 components)
• Reworked header/footer to allow conditional designs, using chaining logic just like scoreboard feature, allowing for much more than before. Eexisting configuration will be (partially) converted.
• Placeholders will no longer show last known value when placeholder starts returning identifier. This typically happens on proxies when switching servers and new server does not have PlaceholderAPI, the expansion or TAB-Bridge, causing the placeholder to not update, making users think it froze, instead of identifying the actual cause.
• invisible-nametags option now supports condition names or conditional expressions like enable-collision does, allowing to conditionally make nametags invisible-nametags
• Added %deaths% placeholder returning player's death count (backend platforms only)
• Fixed some issues in multi-server support feature
• Added new condition types: not contains ("!<-"), not starts with ("!|-") and not ends with ("!-|")

With TAB now supporting all platforms, especially modded ones, it is not realistic to support all MC versions in one jar, so TAB only supports the latest MC versions(s). However, a new issue template was added to github issues, where you can request a backport of latest TAB version for your desired MC version (if it does not exist already or is very old).