If you want to get further details of the changes since you last read them – please read this - http://community.office365.com/en-us/wikis/office_365_service_updates/974.aspx
Some ones you should be aware of are:
- New Office Web Apps features in SharePoint are being released!
- Dirsync Scoping and Filtering is now supported – this is great so you do have to sync up your entire directory.
- There is new Interop to work with Third Party Identity Solutions (or STS servers)
- New PDF Viewing through browser.