Carriers across the Globe have started approving Lumia Cyan update for mostly Lumia 925 first. We reported about French carrier SFR rolling out the Lumia Cyan update for Lumia 925 starting July 8th. Now, Vodafone Australia has also approved Windows Phone 8.1 Blue update for Lumia 925. So, hopefully we will see a roll-out soon!!
For other devices, the Lumia Cyan update software hasn’t yet arrived for testing, so it may be further delay for them. In the meantime, you can read the Full Changelog of Lumia Cyan and Windows Phone 8.1 on our dedicated page.