Perm URL with updates: http://xahlee.org/emacs/emacs24_features.html
Unicode 6 Support
Unicode 6 is now supported. For example, call ucs-insert 【Ctrl+x 8 Enter】 then “GRINNING CAT FACE WITH SMILING EYES”, then you get this char 😸.
Note: the char won't display in emacs. First, make sure your system has the font. Best is Symbola. (➲ font for Unicode 6) But even if you have Symbola installed, emacs won't show the char unless you actually switch to that font. Am not sure there's much one can do.