What is new on Qt6,Does it worth to upgrade?

I want to known what is new on Qt6.
How to migrate my Qt5 project to Qt6.
How much work should I do?

I will try if it is good enought.

>Solution :

Here is the chance details you could check it out: What’s New in Qt 6.0
And here is how you can porting your Qt5 project to Qt6: Porting to Qt 6