The Windows Live beta has been updated to Essentials beta with new look including Messenger, Mail, Photo Gallery, Movie Maker, Writer, Toolbar, and Family Safety and additional programs like Microsoft Office Outlook® Connector, Office Live Add-in, Microsoft Silverlight..
You can download it from http://download.live.com. These can be installed via single installer that lets you choose which programs you want to install. It will upgrade the programs if you are already having the previous version.
If you get any issue regarding this, you can check this official release note “detailed release notes (pdf) “
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thanks to Vasu for information