Omniref

Matz gave a keynote at RubyConf 2014 where he presented some major ideas for Ruby 3.0, including how Ruby might be able to implement static typing.

Omniref

At RubyConf 2014, ko1 (Koichi Sasada) explained some significant speedups that will be included in Ruby 2.2, including garbage collection for symbols and incremental garbage collection.

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Riding Rails

Contain a security fix where the existence of arbitrary files can be leaked (but not the contents). 4.0.11.1 and 4.1.7.1 have also been released for anyone on those branches.

Brian Shirai

The conclusion to a series of articles about Rubinius 3.0 looks at the changes it will introduce to the language itself.

Thoughtbot

Removing things like Typekit and other font services and external APIs can speed up your integration tests.