For android users and those who use chrome there's a lot of new updates rolling out from Google. Here's some noticeable ones.
Hangouts messaging available through chromeLink
App Data syncing. - Play game on a mobile then continue from the same spot on tablet(pretty sure ios has this)
Notifications synchronization - Swipe away a notification on one device and it will be be already swiped away on other android devices.
Google Now on Chrome - You can talk to your pc through you microphone just by saying "Okay Google" http://www.engadget.com/2013/05/15/google-conversational-sea…
Google Drive - Drive now has 15GB instead of 5GB
Samsung Galaxy S4 with Pure Android - Only available in the USA for $649. Pretty much a Nexus devices with removable battery and microsd slot and the other S4 hardware specs.
Google+ Updates - Heaps of new updates to pretty much everything, new UI and photo enhancements and features
the S4 with pure android looks great! shame it's not coming to aus :(