Previous versions of StateServer allowed you to associate a fixed number of fixed-size metadata values with an object in the store. This StateServer version adds support for automatically-managed, variable length property indexes together with a Language-integrated Query (LINQ) provider for locating objects in the store that satisfy query expresisons specified using LINQ.
Property Indexes - describes StateServer's support for property indexes and how to enable them in your objects.
Query by Object Type - introduces new NamedCache functionality that allows you to retrieve a sequence of objects filtered by object type.
Using LINQ - describes how to use the ScaleOut LINQ provider in your applications.
Invoke and Merge - describes the integration of StateServer's Parallel Method Invocation features with LINQ.