The popular third-party Instagram app for Windows Phone users, 6tag, has snagged yet another update today. This new version's changes are mostly on the backend.
According to the app's developer Rudy Huyn, the live tiles for 6tag now use WinRT, rather than the old Silverlight tools. Silverlight is slowing but surely being phased out, so this is not a huge surprise. Other than this live tiles change, there doesn't appear to be anything else new in this update, which boosts the version number from 5.9.1 to 5.9.2.
Source: Rudy Huyn (Twitter)