What do you mean with "how it is" ?
Maybe:
For me, it is good - I like it more then I hate it.
dislikes: the space-wasting pull-down menus, font rendering worse then 4.5.x
likes: some new features (most of them tied to BES 5.0)
But this version is stable and I have no problems using it (exeption, this bug, but as I wrote above you can workaround it)
Look in this thread and try to read all posts:
http://www.blackberryforums.com/beta...90-leaked.html
There a many people who have problems with third party applications. While this is probably not the fault of the Version 5.0, They cannot use their device until newer versions of Application xyz is availible.