This is definitely the best APEX version ever. I just tested it and it took less than a couple of minutes to get used to it. You know how hard it is to accept major changes. This time it was easy. The changes made in the builder will for sure increase the productivity although this was never a weakness of APEX. There are of course some things missing (or I just couldn't find them) like how to create a simple form. Some features are still not implemented like workspace user management. Some things remained the same like a wizards for page creation. However, I can confirm that it is worth of requesting a workspace and starting to use it. It is simply cool.
This is how the page builder looks like:
And this is a result of my first test:
And here is the link: