A few more changes have been applied to the installer at
http://www.autohotkey.com/download/
Fixed StringUpper/StringLower so that they work on accented letters and other letters whose ASCII value is above 127.
Fixed the Input command so that having more than 1024 items in the match-list does not cause a memory problem.
Fixed ambiguity with `:: when it's used as as part of a hotkey vs. literally in a command. [thanks Rajat]
Changed the Input command so that ENTER is seen as the more-appropriate linefeed (`n) rather than carriage return (`r). This affects the contents of the OutputVar and the MatchList. Please change your scripts accordingly.
Changed the Input command so that Control-Backspace and other modified backspaces are ignored. Only plain backspace is used as an "undo" keystroke.
Increased max size of each variable from 16 to 64 MB. This does not increase the memory used by existing scripts. This can be made a configurable option if anyone needs it.
Added support for the AutoIt v2 command HideAutoItWin.