I couldn't wait any longer. No one was screaming about KitKat being hosed up, so I pushed the button!
Downloading now! :-D
Update:KitKat took about 32 minutes to download and install, followed by startup of about 15 minutes with messages: "Android is Updating Optimizing 1 (-269) of 269 Apps", "Upgrading Media", "Upgrading Contacts", "Upgrading Database" & "Finishing Boot".
I haven't done a factory reset or cache wipe yet, but the M is responding more quickly and smoothly. Before KitKat it had become very sluggish and laggy / slow to respond to selections.
Things I don't like:
-all notifications in the upper right are white. I miss the blue clock and service, wifi and bluetooth turning from white to blue for verification of connection.
-the open apps button adds the app currently in use. I find this silly. On JellyBean, the current app was returned to by selecting the open apps button. This allowed for easy toggle between Nav and Music, while driving with car dock.With KitKat, now I have to look to find the second on the list, which was the previously used app. Hard to explain, but you'll see, when tried.
-no apps on lock screen. The "lock Screen Widgets" don't cut it. I guess I'll have to find an app for this, like swipe is app only now. I'm sure I'll find others.
-white background on txt msg with no option to change it.