The maintainer said this three months ago in a comment on that issue:
> Express 5 is pretty much completed at this point, and we're just finishing up the last code merges in upstream modules in order to bump the dependencies finally in the 5.0 branch.
Like how Windows XP on an old computer still "works just fine"?
What does work just fine in terms of software that's ever updating mean? It doesn't matter if it's called 4 or 5 or any other label.
On the comments: my point is more that we should not base the NodeJs standard on something that's not regularly maintained / updated. There are infinite amount of things that can be improved on for a "standard" server framework used by millions. You don't say Node "is done" and leave it? People would definitely fork it or move on (as happened in the past).
There hasn't been a new beta in a long time. Last release about a year ago and then the 1 before that about 3 years ago. Not a very convincing beta.