So I looked in the files but there is no CAN folder or library either, so Iooked a little confused where is it?
Markus you're right, the changelog is wrong, I'm going to update the release note.
The can library is the one maintained by Collin80.
Its a very good library and it is improved/updated so often that the one distributed within the IDE becomes old very quickly.
Moreover, the CAN library distributed inside the IDE gets in your way if you want to update it manually.
So we decided to remove it from the IDE and allow users to install/update it by themselves and make it independent from the IDE release cycle (that can be very long as you may have noticed).