Windows Azure SDK 1.8 is live and available to work with VS2012 and VS2010SP1. You can choose any one WebPI 4.0 based installer to install from here.

Direct Download Link: http://www.microsoft.com/en-us/download/details.aspx?id=35448

Following is the list of all components installed with SDK 1.8:

By default the SDK is installed here:

C:\Program Files\Microsoft SDKs\Windows Azure\.NET SDK\2012-10

You can verify the different components installed as below: