[JeanPierre]

    And if you ask me, its just so good that we haven't needed a revision in 20 years.

What about threading and/or concurrency? CLTL doesn't mention it, yet it is something which is now considered a requirement for real, general purpose programming languages.

[mrottenkolber]

We do have BORDEAUX-THREADS (defacto standard for OSS implementations). The commercial vendors supply various high perfomace concurrency frameworks.