Western states get all features and data, which means that Arizona, California, Colorado, Idaho, Montana, Nevada, New Mexico, Oregon, Utah, Washington, and Wyoming get everything. Alaska, Kansas, North Dakota, and South Dakota are coming next.
The rest of the US gets everything but layers. This includes GPS, base maps, offline maps, map content (waypoints, tracks, etc.), collections, and search.
Outside of the US, you get GPS, satellite imagery, map content, collections, and search.