Symbian Anna software update v025.007  is now available for Nokia N8, E7, C7 and E6 over Nokia Suite and OTA. The update is rolling-out eventually and will be available soon on other Anna devices.

You can update your Anna device firmware over OTA (Over-The-Air) or by using Windows PC applications Nokia Suite. All Symbian Anna smartphone support UDP (User Data Preservation), but we suggest you to backup all of your personal data before updating the device firmware.

The Anna update for Nokia N8 over OTA its about 936 kB approx in size.  [via]

The Anna update for Nokia E7 over over OTA its about  1002 kB approx in size.

The Anna update for Nokia C7 over over OTA its about 928 kB approx in size.

The Anna update for Nokia E6 over over OTA its about  3.2 MB approx in size. [via]

Changelog :

• Improved features and performance
• Updated application
• Better stability

Notes: 

• Official change-log has not yet been released so far.
• The update may not be available to all the regions.
• It may take some time before this new firmware is available for your region.
• Some phones and network and country variants may not see the update via OTA.

As the size of update is small, it looks this update brings merely small bug fixes, under-the-hood improvements and stability fixes to the devices. If you got the update please comment below to buildup a changelog.