Updating control toolkit

I have some projects with some control from Atlas control toolkit (previous version).
Now there's the new version!
Is not easy to know what i do for update the previous with the new one.
Only change the dll?
It is sure that the old project will work? ...or I must to modify some code?
And what about .net controls tool list?
thanks

Just make sure that your project references the new dll. For the toolbox, delete all the controls from your toolkit tab and then readd them all. As for breaking changes, I've not heard about any, but I've not looked hard for a list of changes / breaking code.