I slowly (really slowly) progress in order to complete the implementation of the JSR292 backport, not because it's difficult but because I have not much time devoted to that task.

Recently (ok, ten days ago), John Rose sent a patch to mlvm that allow javac (not the real one :) to encode an invokedynamic call using an used/free opcode (186).

In order to support this new bytecode instruction in the backport, I have patched ASM and because I know that lot of dynamic languages use ASM in their backend, that patch is available in a branch named invokedynamic of the SVN repository of ASM.
http://svn.forge.objectweb.org/cgi-bin/viewcvs.cgi/asm/branches/

Enjoy,
Rémi