If you want details you can read more about it at Joe Eldridge blogpost on Technet (forget that it says "Surface Pro 3, it is for all three versions)
A quick recap:
- Fast way or getting "all" Surface drivers and firmware except touch firmware updated
- Primary for "running" Surfaces
- Does not check power state, so make sure you have it plugged in or lots of juice
- Firmware update will check for 25% battery state before installing
- Missing SATA driver, so if deploying Surfaces you need to download the driver pack
- Driver pack for deployment can be found HERE
