Microsoft today released a new update for Windows Phone 8.1 preview users. This Windows Phone 8.1 Preview for Developers (build number 8.10.12393.890) includes several improvements based on the feedback they have received.
Last month, Microsoft released similar update for preview users. If you are on the Windows Phone 8.1 Preview for Developers and want to get the update, go to Settings then Phone Update and click “check for updates”. If you want to download Windows Phone 8.1 Developer preview, read the post below for instructions,