We are pleased to announce GNU Guile 1.9.5. It is the sixth pre-release of what will eventually become the 2.0 stable series, featuring a compiler and virtual machine.
This release provides, among other things, support for `case-lambda' (multiple-arity procedures), a more efficient calling convention for procedures with keyword and optional arguments, better support for Emacs Lisp's `nil', and new compiler warnings.
See the announcement at http://lists.gnu.org/archive/html/guile-devel/2009-11/msg00065.html for details.