If you want to know what the future of dynamic languages holds read this guy. Seriously – read the 21st Century Smalltalk blog. Today Peter points out:
Mono is an open source software project which provides .Net-compatible libraries, tools, and runtimes for Linux, BSD, OSX, and Solaris. They have recently started work on building a Mono-compatible version of Silverlight and the Dynamic Language Runtime (DLR) under a project named Moonlight. The project page gives a very good overview of the various technologies involved.
Sun should try and hire this guy if it wants to make the multi-language on the JVM story stick.
disclosure: Adobe, Microsoft and Sun are clients.