The author provides a preview of new features coming in Emacs 31, highlighting improvements they've been testing in their daily configuration. Key additions include simplified tree-sitter setup that automatically installs language grammars, a new experimental markdown-ts-mode with Org-like keybindings and live code block highlighting, enhanced Eglot documentation rendering, improved completion with eager updates, new window layout commands for rearranging panes, speedbar integration in side windows, version control improvements, and editable xref buffers for bulk search-and-replace operations.