The Microsoft Windows 8 team has written on their blog that they are getting ready the launch of the new OS by updating the apps before final release.
From Microsoft blog:
Apps within the new operating system will be updated much like the mobile apps on your phone. The Store tile will notify you when updates are available, and you can open it and click the updates link in the top right corner to see the list and install the ones you want.
The Sky Drive’s Windows 8 app has been updated with new features such as search within SkyDrive functionality, ability to rename and move folders and files, new first-run experience, and custom sort order.
Windows apps will be ready for the 26 October public release of Windows 8 OS.