1a) If you mean the implementations, these get regular maintenance, releases, and support.
1b) If you mean the standard/specification, there's no one to update it - writing a new specification like that would mean a lot of time and costs and people.
1c) But updating the spec is still the *easy* part - getting *adoption* is the hard part. And there is very little practical need to adopt a new version of Common Lisp, since ANSI CL survived the test of time rather well. Adopting a new language revision would mean updating all the CL code for a new version, and that would take a lot of work that hardly anyone would be willing to perform.
2) Both of these are "unofficial" websites since there is no one entity to "own" the language. One is a website of the Common Lisp Foundation, a non-profit who serves as a body for organizing Lisp stuff and hosting some common infrastructure; another is a "fan" website describing the basics.
3) Clojure is a completely different language. It's inspired by CL, it's also a Lisp, but it's wildly different in lots of places.
4) There's none that gained practical significance while also being similar enough to CL to be called an updated CL rather than its own dialect (like Clojure or Carp or Janet or Racket). The language is perfectly usable as it is and many people claim it simply doesn't need an upgrade.
On 19.02.2023 06:49, Jason Long wrote:
Hello all, I have some questions about the CL and I'm thankful if anyone replies to them based on the question number:
1- Why isn't Lisp updated anymore? 2- Why are there two websites? https://common-lisp.net%C2%A0and%C2%A0https://lisp-lang.org/ 3- Is Clojure an enhanced version of the CL? 4- What is the updated version of CL?
Thank you.