This in no way confirms that the U.S. variants of these devices will get the updates at the same time, but at least is indicates a time frame for Samsung to start rolling out the updates.
We know that Google is already readying Android 4.4 KitKat, and Nexus owners will be proudly parading an even newer version of Android by the time the previous update reaches Samsung owners. Still we feel Samsung owners will be happy that Android 4.3, especially because it brings Galaxy Gear compatibility to many of the older devices.