Jelly Bean for the international versions of the HTC One X has begun pushing out, but the situation is a bit complicated. Rather than being pushed to all phones in a particular region, HTC pushes out updates to certain devices based on their CID (Customer ID) in each region. For example, phones with a CID of htc__612 are sold to carriers in Taiwan, and they started receiving their OTA last night. Alternatively, my unlocked phone with a CID of htc__044 hasn't received it yet, even though it's also sold in Taiwan (among other locales). I told you it was complicated.
What we know now is that the mentioned phones with htc__612 CIDs are receiving the OTA update as we speak, and HTC has informed me that the Jelly Bean update for all phones in Asia and Europe is "rolling out now". An insider told me that my particular model (htc__044) should start seeing the OTA tomorrow (Sunday). Finally, I've yet to hear from anyone in Europe who has received the OTA. I told you it was complicated.
If you've hacked your Tegra3 One X, you understand all of this and know where to look for information about rolling back and getting the OTA. If you haven't hacked your phone, just know that the Jelly Bean OTA is in process. Hopefully we'll all see it soon, as a few early reports say it's extremely fast and makes a great phone even better.
Thanks, Jeff and Ray420!