In his review of a ���Ruby For Rails��� book today, Pan Pantziarka comments that the new language Ruby is now being ���billed as a possible Java-killer���.
Well, it seems that Sun may think so too, as its JRuby team (Sun hired key Ruby developers Thomas Enebo and Charles Nutter, back in September) has just released JRuby 0.9.1 for Java, with version 1.0 is expected in due course.