doc: bump version requirements

README.md

@@ -33,10 +33,10 @@ filetype and syntax plugin for LaTeX files.
 
 ## Requirements
 
-VimTeX requires Vim version 8.0.1453 or Neovim version 0.4.3. The requirements
-were updated in July 2020 after the release of VimTeX 1.0. If you are stuck
+VimTeX requires Vim version 9.1 or Neovim version 0.9.5. The requirements
+were updated in April 2024 after the release of VimTeX 2.15. If you are stuck
 on older versions of Vim or Neovim, then you should not use the most recent
-version of VimTeX, but instead remain at the v1.0 tag.
+version of VimTeX, but instead remain at the v2.15 tag.
 
 Some features require external tools. For example, the default compiler backend
 relies on [latexmk](https://www.cantab.net/users/johncollins/latexmk/index.html).

doc/vimtex.txt

@@ -221,7 +221,7 @@ of its key features. Windows users should also read |vimtex-faq-windows|.
 
 Vim version ~
                                                          *vimtex_version_check*
-  VimTeX requires Vim version 8.0.1453 or neovim version 0.4.3.  It will not
+  VimTeX requires Vim version 9.1 or neovim version 0.9.5.  It will not
   load for older versions, unless one adds >vim
 
     let g:vimtex_version_check = 0
@@ -295,9 +295,9 @@ Clientserver ~
   aware of some differences from regular Vim and should therefore read
   |macvim-clientserver| carefully.
 
-  Since Vim version 8.0.475, one can use |remote_startserver()| to start
-  a server from your `vimrc` file. The following vimrc configuration snippet
-  will ensure that Vim starts with a server, if possible: >vim
+  You can use |remote_startserver()| to start a server from your `vimrc` file.
+  The following vimrc configuration snippet will ensure that Vim starts with
+  a server, if possible: >vim
 
     if empty(v:servername) && exists('*remote_startserver')
       call remote_startserver('VIM')

ftplugin/tex.vim

@@ -14,10 +14,10 @@ endif
 let b:did_ftplugin = 1
 
 if !(!get(g:, 'vimtex_version_check', 1)
-      \ || has('nvim-0.4.3')
-      \ || has('patch-8.0.1453'))
+      \ || has('nvim-0.9.5')
+      \ || has('patch-9.1.0'))
   echoerr 'Error: VimTeX does not support your version of Vim'
-  echom 'Please update to Vim 8.0.1453 or neovim 0.4.3 or later!'
+  echom 'Please update to Vim 9.1 or neovim 0.9.5 or later!'
   echom 'For more info, please see :h vimtex_version_check'
   finish
 endif