Nothing critical has been been reported (that hasn't been fixed) in 6.25_11 so 6.25_12 has just been released. Unless I hear otherwise by Tuesday this will become ExtUtils::MakeMaker 6.26.
Why make such a fuss? Because I'll be offering 6.26 as being stable enough for 5.8.x, the first new release of MM to go into a stable Perl since 6.21 almost a year and a half ago and thus setting any breakages in backwards compatibility in, if not stone, some pretty damn thick mud.
