Jeff Gordon from HTC said "Who told you we are dropping support for the One X ?" on twitter. Ok I have 2 possible theories why we *may* get 4.4
1. Because of the whole 4.2.2 and 4.3 mess.
See, unlike us, a majority of newer devices such as the One, One Dev Edition, Butterlfy, Droid DNA and Butterfly S did not receive 4.2.2. During that time, 4.3 was just announced and HTC opted to jump straight to 4.3 for those devices. Now, this was fine since if you look at their changelogs, 90% of the 4.3 update for them was what we got in 4.2.2. Fair enough. They were finally receiving the things we got. Now, the reason why they didn't update our phones to 4.3 was because I believe the amount of improvements were too little. So they just skipped it since 4.4 was on the way. What they may do now is jump 4.3 and go to 4.4 for us since it's pointless to give us 4.3 now. This is all due to the system requirements being halved and probably because of the One X+
2. Now, like I've said before, if they were to drop the One X at this point, it'd be understandable since it's more than 18 months now. However, the One X+ isn't. They have no real reason to drop it. Now, if they were to support the One X+ but not the One X, it would look REALLY bad because both devices are identical, just a minor bump in front camera specs, internal memory and a newer type of T3, all of which do not influence the ability to run 4.4. Plus, the Nexus 7 2012 like I have still has SoC support from nVidia, so they can't pull a fast one by saying they have no SoC support. They do.
Remember, this is my theory. It's based on my own reasoning and what I've managed to make out of the whole situation. Take it with a pinch of salt, knowing that our devices have seen 3 major Android versions and that is on par with or even better than Nexus devices. Don't see what I mean ? The Nexus One started with 2.2, updated to and died at 2.3. The Nexus S started with 2.3, updated to 4.0 and died at 4.1. The Galaxy Nexus started with 4.0, updated to 4.1 and 4.2.2 and finally died at 4.3. See ? Excluding the Gnex, we are on par and have even surpassed the Nexus line. So I am happy. Guess what I'm trying to say is, there may be hope but at the same time don't get over excited. As for the tweet by Football, it may have been just his own speculation, since we all figured this phone died at 4.2.2. At the time, he didn't even see the features for 4.4 and he probably didn't know about the rush HTC was making to get 4.4 out onto the One within 90 days.