JVM Language Summit 2012 - Registration Open
By arungupta on Jun 04, 2012
This is an "an open technical collaboration among language designers, compiler writers, tool builders, runtime engineers, and VM architects".
There are presentations, workshops, and lightning talks. About 70 language and VM implementers attended last year and the talks were recorded. Some videos from last year are available here.
See the Registration Online; for questions, send mail to inquire AT jvmlangsummit.com.