Many devs have been waiting for a toolkit so they can consume OData from [Metro] “Windows Store” apps they are building. The Release Candidate of these tools is now on the download center:
WCF Data Services Tools for Windows Store Apps RC:
“The WCF Data Services Tools for Windows Store Apps installer extends the Add Service Reference experience with client-side OData support for Windows Store Apps in Visual Studio 2012.”
http://www.microsoft.com/en-us/download/details.aspx?id=30714
Mark Stafford from the OData team has written two blog posts that walk you through using the tooling and creating a WinRT (aka Windows Store) app
OData 101: Building our first OData-based Windows Store app (Part 1)
OData 101: Building our first OData-based Windows Store app (Part 2)