I'm looking forward to it.
This is very good.

excited about the new beta..

Is there an ETA for this beta specifically and for the CLI final release in general?

I propose to include #1248 in beta.10 it's a breaking change since it requires to import the babel polyfill in main.js, but overall ensures a better dev exp.

Could make a PR if we decide so.

@Codermar FYI beta.10 is out right now

I was using Vue-CLI 3.0.0-beta.9 and then upgraded to Vue-CLI 3.0.0-beta.10 (including all plugins to 3.0.0-beta.10)

Everything worked fine, except that the Hot Module replacement broke for my project.
(It is working fine if I make a project from scratch using Vue-CLI 3.0.0-beta.10)

Now, when I compare my beta9 and beta10 builds, here is what is happening:

If I change a .vue file (I'm changing a placeholder of a text field in <template>)
For beta9, hot reload works fine and the network tab in my chrome shows following

f38738739fc200ae7163.hot-update.json    200 xhr app.js:56   277B    310 ms	
2.f38738739fc200ae7163.hot-update.js    200 script  app.js:43   7.4KB   10 ms

But with the beta10 the UI does not update though there is something happening in my network tab, and that too twice

f6122e677f76ccde7d62.hot-update.json	200	xhr	     app.js:60    	279 B	485 ms	
app.f6122e677f76ccde7d62.hot-update.js	200	script	app.js:46	14.7 KB	8 ms	
fc2e9a97befa8973fd9e.hot-update.json	  200 xhr	  app.js:60	279 B	53 ms	
app.fc2e9a97befa8973fd9e.hot-update.js	200	script	app.js:46	7.7 KB	6 ms	

This activity in network indicates that HMR is happening but it is not updating the component then and there.
If I route to a different component and come back (without a complete reload), I find the component updated to the latest content.

Can anyone help?
I cannot provide a reproduction link as my project is internal.

I was using Vue-CLI 3.0.0-beta.9 and then upgraded to Vue-CLI 3.0.0-beta.10 (including all plugins to 3.0.0-beta.10)

vs

(It is working fine if I make a project from scratch using Vue-CLI 3.0.0-beta.10)

Did you do the npm version of "turning it on and off again" - deleting /node_modules and running npm install?

@LinusBorg
Yes I deleted the complete node_modules and did a yarn install .

Well I got the issue what made HMR stop.
In my vue.config.js, I was overriding the eslint config to run eslint with --fix flag with following code:

config.module
      .rule("eslint")
      .use("eslint-loader")
      .tap(options => {
        return merge(options, {
           fix: true
    });
});

Because of this, after the upgrade, the webpack is building my code twice at very small successions and somehow interfering with HMR.
This used to work fine with beta 9.

With, beta 10, if I disable the this fix flag in vue.config.js, HMR works, but I really want that real-time fix rather than commit time fix.

I got it fixed, my component had en empty style tag that was causing double compilation of code, because of my eslint config and prettier (They were clashing)

<style scoped>
</style>

Removing this fixed HMR.

Thanks everyone for helping though.

^I think that should not happen. This should be regarded as a bug.

If the one with the problem can produce a minimal runnable reproduction and open an issue (possibly in the vue-loader repository), we are happy to taker a look at it.

Until then, this sounds like a custom-config-problem messing up the SFC file format / deleting stuff while auto fixing.

because of my eslint config and prettier (They were clashing)

@piehei If you have additional information to provide, or a reproduicton, feel free to share.

Closing as beta 10 is released, please see Change log for actual breaking changes.