For more information check out the following two sites:
Product overview on Adobe.com: http://www.adobe.com/products/livecycle/dataservices/
LiveCycle Developer Center on the Adobe Developer Connection: http://www.adobe.com/devnet/livecycle/dataservices.html
For existing customers with maintenance and support contracts, the Data Services 4.6 release along with Flash Builder 4.6 has been automatically pushed into your Licence Web Site (LWS) account. This includes ADEP/LiveCycle V10 customers that have licence rights to Data Services.
Juergen Hauser – Sr. Product Manager – LiveCycle Data Services