Updating Data Card using REST API

Hi All

We are keen on updating a data card through the REST API.

We can update the data card using the SOAP API

http://topliners.eloqua.com/community/code_it/blog/2013/01/21/eloqua-api-how-to-update-a-data-card

However trying to do it via REST is difficult.  The examples provided by Fred Sakr only allow for Retrieve and Create.  However in this article, http://topliners.eloqua.com/thread/5848, Fred in May 2013 mentions this functionality will be available in the Summer Release which has been around for a couple of months, and documentation available on Topliners.

I'm unable to find any details on that though?  Has anyone got any ideas around this?  If not I guess I'll have to head back to the SOAP API.

Thanks

Mark