Here’s the facts, it’s a beta and it’s still laggy. It’s also oversized.

When I say it’s oversized I mean that in both file size (16mb+) and actual appearance.

Note the huge buttons.
Continuing, it is very slow at this stage. Every time you minimize the contact list to the system tray it takes a while to reload your list when you open it again.
At this moment there are no real improvements from 7.5 so I highly suggest that you do not attempt to upgrade to this version. It does however add a “Sharing Folder” to your My Computer screen. It does this without asking you first either so make sure to disable file sharing.
Don’t upgrade to 8.0. Why? It’s in closed testing so you won’t be able to logon unless you have your BETA id.
If any of our conversations end abruptly, my MSN probably died.