Among the new features coming in SubSonic 2.1 are some incremental enhancements to the existing Scaffold functionality. Here's a quick rundown of these changes, which you can see in the current beta release posted on CodePlex

ScaffoldType
With the 2.1, AutoScaffold is now a "mode" of the existing scaffold control. This mode is enabled by setting the ScaffoldType property to "Auto", as opposed to the default "Normal" setting. When set to Auto, the scaffold adds two new drop down menus above the grid, allowing a provider and class to be selected. In all other ways, the behavior is functionally identical to a scaffold running in "Normal" mode.

AutoGenerateManyToMany
This boolean value, set to true by default will automatically cause the scaffold to generate many to many mapping controls at the bottom of the edit form for any tables identified as Many to Many. The functionality uses the mechanism that identifies tables as M2M at code generation time. If this mode is too "permissive" in identifications techniques, you can still specify tables using the existing ManyToManyMap approach.

UseEmbeddedStyles
Without styles applied, the scaffolds can look a bit, well, ugly. However, when the UseEmbeddedStyles property is set to true, the scaffolds will now dynamically emit a style sheet at runtime which should make them look a bit more presentable out of the box.

DropDownCssClass, CheckBoxCssClass
It is now possible to specify a CSS class to be used for DropDown and CheckBox controls when they appear in the scaffolds.

Updated CRUD Operations
Prior to 2.1, the scaffold used inline SQL construction to perform all CRUD operations. As of this release, these operations are now performed using the new query engine. Ideally, this should reduce the number of issues encountered when using the scaffolds across different provider types.

As always, we welcome your feedback...