The long awaited 2.2.0 version of Guile has been released. This version is a significant update to the Guile system. It includes a new compiler and VM and several other performance enhancing changes. They even boast a complete Elisp emulation. See the announcement, linked above, for a complete list of the changes. Andy Wingo has been working on this upgrade for 6 years and we all owe him a debt of gratitude.
I downloaded, compiled, and installed it without any problems on my MacBook Pro. It takes a while to compile—even on my speedy laptop—but installs cleanly after that. You may remember that I’ve had problems compiling and installing Guile on my Macs before but I had no difficulties this time.
I just got it installed so I haven’t had much time to play with it yet but it seems very nice at a cursory glance. If you’re a Schemer, you should definitely give it a try.