A second firmware update is currently rolling out to the international, Tegra 3-flavored HTC One X, according to reports from multiple sources, including the Android Central forums. The update to version 1.29.401.7 weighs in at around 35MB and is being pushed out now to unbranded, unlocked European One X phones. Early reports from the forums indicate that this new version may address the intermittent Wifi disconnection issues that have been affecting some One X owners. In the meantime we've reached out to HTC for any official info on changes in the new firmware version, and we'll update you when they get back to us.
If you're rocking an international One X, head to Settings > About > Software updates to begin your journey to version 1.29. And if you notice anything new or improved, be sure to shout out in the comments!
More: HTC One X forums