Here's a short overview of what we are planning for the win32 package in 2012.
1) XAMPP Control Panel 3 as first maintenance release and the default panel.
2) The replacement of the Mercury mail server with XAMPP mail. XAMPP mail will be a a simple mail socket service for writing mails to hard disk or to redirect mails to another mail account.
3) Optional: Adding Python with mod_wsgi as another programming language. Python is a perfect complement to PHP (web) for system solutions. With, for example Django, Python also has a good web framework. Note that Ruby with Ruby on Rails already has a nice easy install package for the web context, yet Python does not at this point in time.
4) Optional: We will evaluate another installer system. Until then we will continue to use the NullSoft Installer.