Emacs 22 has been released. From the Emacs web site:
Emacs version 22 includes GTK+ toolkit support, enhanced mouse support, a new keyboard macro system, improved Unicode support, and drag-and-drop operation on X, plus many new modes and packages including a graphical user interface to GDB, Python mode, the mathematical tool Calc, the remote file editing system Tramp, and more.
Source downloads are available from GNU. Hopefully, most GNU/Linux distributions will package Emacs 22 soon.