This morning I found the System Update download indicator. I let it sit for a few hours (0% 0 B / 0 B) then restarted my phone. I then found the "System update ready" screen. I believe this update addresses the Stagefright vulnerability. Updated to 6.22.605.4 with no issues.
"Android security patches.
We will continue working with Google and handset makers to ensure that any security patches are available as soon as they're fully tested and approved. These patches will help protect your device from the threat of hacking or viral infection by correcting for software vulnerabilities..."
Here is the "Learn more online" link:
https://forums.androidcentral.com/e?...token=DDhCVDEp