Migrate To Bootstrap 4 From Bootstrap 3?

I am using bootstrap 3 in my project. I see that Bootstrap 4 is a major rewrite of almost the entire Bootstrap project. But is there any necessity to migrate to bootstrap 4 from 3?

Solution 1:

To make your project a bit future-proof!

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http://upgrade-bootstrap.bootply.com gives an overview in code for what is different from Bootstrap 3 to 4, I suggest you visit it.

Also it seems there are several changes, regarding:

1. Browser support
2. Global changes
3. Components
4. Misc

and more, as mentioned in here, which you should take into account. Notice that it also confirms what you are claiming:

Bootstrap 4 is a major rewrite of almost the entire project.

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It's not that you must upgrade now or your app will live in hell, but it seems that many new cool things are happening in bootstrap-4, so the question is, do you want your app to be OK for now, or to make it a bit future-proof? It's up to you!