Been able to complete the installation of Exchange 2010 means able to explore and enjoy the new features of this new software from Microsoft.
Just showcase some changes on two features in the new OWA.. :)
1. Open another mailbox from OWA. Yes, this feature was not available in OWA 2003, but implemented in OWA 2007. However it opens a new IE window as the target user and you are able to see all folders including "Deleted Items"
In OWA 2010 Beta, it's different.
Here is the screen capture

You can select the mailbox from the GAL which is not available in OWA 2007
Instead of keep on open new IE windows, the new interface nested nicely as shown below. However it takes away all folders and left only "Inbox".
It also remembers which mailbox(es) you have opened and it will be there the next time you logon again.
2. Showing quota limit. In Exchange 2007, OWA is able to display usage of the mailbox, and in this release, there is improvement on it.
Here is the screen capture.

There are many more new features. I will share with you in the future articles. So stay tuned with me @ http://twitter.com/tristonwan [1]. :-)
Links:
[1] http://twitter.com/tristonwan