After a long hibernation, Jasmin has finally been updated. The major update in version 2.0 is the JasminXT language. It is an extension of the existing Jasmin language and is therefore backward compatible. JasminXT additions include the support of StackMap attributes, offsets instead of labels, Signature attributes and much more. The JasminXT documentation is available here : http://jasmin.sourceforge.net/xt.html
Jasmin 2.0 is included in the tinapoc reverse engineering toolkit. Tinapoc also includes a JasminXT-enabled disassembler : http://tinapoc.sourceforge.net/