Today we launched the second Beta of the Windows Phone SDK (renamed from ‘Windows Phone Developer Tools’).

The bits are now live on the Download Center; and they will be available [for the first time] via WebPI around mid-day today. In addition to this release, we are in the process of sending out Connect invites to eligible App Hub registered developers, providing them with a tool to update their retail devices to receive ‘Mango’ build 7661.

This is a pretty impressive milestone; and Twitter is already ablaze with excitement.

To get the bits, here are URIs of note:

· Go Link: http://go.microsoft.com/?linkid=9772716

· Full Download Center URL: http://www.microsoft.com/download/en/details.aspx?displaylang=en&id=26648

· Bit.ly URL: http://bit.ly/wpsdk-b2