Android Ice Cream Sandwich

"Design changes for Android 4.0 include:

• Replacing physical buttons on devices with equivalent on-screen icons.
• New lock screen features - the ability to access camera and notifications.
• Ability to group apps and shortcuts by dragging icons onto each other.
• Redesigned multi-tasking screen. Applications are represented by scrollable tiles.

Other software changes include:

• Face recognition unlocking. Rather than entering a pattern code as in previous versions, users can opt to look into their camera.
• Enhanced email capability - support for nested subfolders
• Android Beam - users can swap web content or links to apps by touching their phones together.
• Enhanced voice input featuring a continuously open microphone - meaning phones listen out for instructions."

BBC News - Android debuts Ice Cream Sandwich