The new firmware update will help the hardware and operating system work better in tandem with one another, where Microsoft has stated that it will improve system experience and enhance overall system stability, Wi-Fi included. Other updates include the Surface Pro Embedded Controller Firmware update (v38.6.50.0), Surface Pro System Aggregator Firmware update (v3.9.350.0), the Surface Integration driver update (v2.0.1102.0) and the Surface Wi-Fi and Bluetooth driver update (v15.68.3055.107).
It does not look as though this particular update would have run into any kind of issues, since complaints against the latest firmware update do seem to be non-existent – which is a good thing, of course. Still, you might want to be really sure by waiting for a wee bit longer if patience is your strong suit.