Flutter for web: hype beast or a silver bullet?

Yes. Flutter is ideal for mobile and web app development because it is highly compatible with modern web rendering technologies such as HTML, CSS, and JavaScript. You can easily compile existing code into a client experience, embed it in the browser, and deploy it to any web server using Flutter.

I'm hearing more and more about it, especially how it'l let you write windows applications as well as iOS.

One thing people don't realize about DART was that it was built a few years after Go. The idea was Dart was going to go into Chrome and it would let devs write faster loading page.

Instead DART happened, and it would let devs use 1 language to write Mobile/Desktop/Web apps at once. Since its a virtual machine language, it's most like C# or Java, and has an async/await construct a bit like JavaScript.

Google looks like they're joining the framework discussion with a framework of their own: Flutter. I guess they felt one-upped by Zuckerberg and felt they needed to respond.

The attraction of it is you can write one code for every platform including web. Or at least thats what they claim.

It's still a young framework and it's running on DART which Google made 10 years ago.