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.
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).
> Starting with Express 5, route handlers and middleware that return a Promise will call next(value) automatically when they reject or throw an error. For example:
> app.get('/user/:id', async (req, res, next) => { const user = await getUserById(req.params.id); res.send(user) })
> If getUserById throws an error or rejects, next will be called with either the thrown error or the rejected value. If no rejected value is provided, next will be called with a default Error object provided by the Express router.