Apple is rumored to release a big iCloud upgrade including new photo sharing tools.
The iCloud is due for an update. The Wall Street Journal reports that people according to the matter informed them that Apple is releasing new photo sharing features on iCloud. The announcement of the new iCloud features is expected on June 11 at the WWDC 2012.
The new photo sharing features would allow iCloud users to share photos and to comment on them. Right now the iCloud Photo Stream feature is just syncing photos to devices.
It is pretty sure that Apple will bake the photo sharing features into iOS 6 to compete with Facebook's Instagram.