The new Select widget allows you to fine tune feature selection based on attributes, interactive drawing on the map, and spatial relationships with other data. The new Group option in the Filter widget allows you to filter multiple layers. The Map and Search widgets have new URL parameters. Other highly anticipated improvements include the ability to search for and re-order layers in the Map Layers widget, getting statistics on numeric fields using the new Statistics data action, and support for raster analysis in the Analysis widget. Read this blog post for more information.

Cheers.