Or any better suggestions?
Maybe remove the end date (present) altogether, I don't think it changes when the copyright will expire (long after us).
Possibly just leave the old names/emails and append ", et al." or "and others".
[For example this](https://gist.github.com/codebrainz/5c9447c7e36d4e33cbde0dd90853383c/revision...). I don't have any real preference though.
While at it, I would also remove the "All rights reserved" notice as it seems not necessary at all nowaydays (according to Wikipedia).
👍 I don't think it's consistently used either.