Thiago Jackiw wrote:
> Great work! Does this release only support ruby up to version 1.8.5?

Our understanding is that 1.8.6 was largely a bug-fix release, and since 
  at least half of JRuby is not implemented with the same code as C Ruby 
(our Java code versus C Ruby's C code) we opted not to update the 
remainder (stdlib) until after 1.0. I'd be surprised if the difference 
between 1.8.5 and 1.8.6 was noticed by anyone using JRuby.

As far as 1.9 goes, we're planning to start implementing select 1.9 
features now that JRuby 1.0 is out, to allow early adopters to start 
using those features with JRuby.

- Charlie