Microsoft continue rolling out updates for the Surface devices which updates for the Surface Pro 2 and Surface Pro 3. The updates is an Intel graphics driver that should improve performance and stability on Windows 10. There are no updates for the Surface RT or Surface 2 or Surface 3.
Details from Microsoft:
August 2015 updates
The following update will be listed as “Intel Corporation driver update for Intel(R) HD Graphics Family” when you view your update history.
When Surface updates are provided via the Windows Update service, they are delivered in stages to Surface customers. As a result, not every Surface will receive the update at the same time, but the update will be delivered to all devices. If you have not received the update, please manually check Windows Update later.
HD Graphics Family driver update (v10.18.15.4256) improves graphics performance and stability on Windows 10.