It's Android 4.4.3 here's a screen shot of my device. I have an unlocked developer edition.
http://img.tapatalk.com/d/14/07/24/amaqyta7.jpg
you must have your updates mixed up...i'll put this as simple as possible, though
i have no doubt that you got your 4.4.3 update today/this week
but that's not what the HTC Service Pack update was
Android 4.4.3 updates roll out to be downloaded from your phone's settings (when would be determined by whatever carrier you have or don't have...i have Sprint, I got 4.4.3 last week...you're unlocked, you got it this week)
meanwhile, the HTC Service Pack updates are downloaded through the Google Play Store
firmware updates aren't downloaded or installed through the Play Store, so it's not really possible for the HTC Service Pack update i made this thread about to be Android 4.4.3, especially since i've already HAD Android 4.4.3 for a week now