This is unexpected, but we're not complaining.
This past October, a vulnerability with the WPA2 Wi-Fi standard (referred to as KRACK) was discovered – putting a tremendous number of Internet-connected devices and routers at risk. We've seen numerous companies hard at work to get their hardware updated with a patch for this threat, and the latest devices being updated are a few older Samsung handsets on Verizon Wireless.
Both Samsung and Verizon have become quite notorious over the years for sluggish update turnaround times, so it's a pleasant surprise to see this being pushed out to hardware that's over two years old.
Exact details on the update can be found on Verizon's site here.