Here's a brief breakdown of Froyo benefits.
The Home screen will include a tips Widget to assist new users in how to customize their home screen.
Where today we see the default gray button to bring up the menu, it will be joined by dedicated phone and Internet buttons. They will be accessible from any of the five standard screens.
Improved MSFT Exchange support will include improved security with the addition of alpha-numeric passwords. Corporate IT Admins will be able to enforce password policy among devices. The capability to perform a remote wipe will be available for Exchange Admins. Froyo will support OTA Exchange Calendar sync. You will only need to know your AD (Active Directory) username and password to set up your Exchange account on the phone (Exchange 2007 and up only). Exchange Global Address Lists will now be supported.
A zoom gesture will let you access "stacks" of pictures. In the camera app, on-screen buttons will allow you to control zoom, flash, geo-tagging, white balance, focus and exposure. The LED "flash" will now work in Camcorder mode.
The portable hotspot, supporting up to 8 devices, will be available. You will be able to use the phone as a USB modem for Windows or Linux-based PCs.
You will be able to switch the language of the on-screen keyboard by simply swiping across the Space Bar.
Other changes will make the OS faster.