Nope, the update went fine and I've already updated a few units' firmware without any issues.

According to one of their reps, the main focus for this release was improving communication between the NevoSL and NevoLinks.

They've also updated their WiFi white paper document (now called "NevoSL 1.2 and Networking") and even though it's quite long, it's super simple and practically baby steps you through optimizing your WiFi network for maximum NevoSL/NevoLink performance. To my surprise, there were a couple of settings that it instructed me to change in my network settings that actually helped (and I'm no stranger to WiFi).