Windows Live Writer blog:

Today we will be starting to distribute the final version of Windows Live Writer as an Important update on Microsoft Update. This means that users of Windows Live Writer Beta 2 and Beta 3 will see the update available in Microsoft Update, or have the update automatically installed if they have opted to have Important updates automatically installed.

You can learn more about the update here. If you are a Beta 2 or Beta 3 user and you aren't seeing the update, make sure that you have opted in to Microsoft Update. Of course, you can also just download and install the final version of Writer directly, if you'd like.

Windows Live Writer Final is the same Writer that you know and love, but with the final fit and finish applied. Thanks everyone who used a Beta version of Writer—we hope you like the final version.