Samsung's line of flagship devices will be getting Android 4.3 Jelly Bean soon enough.
According to Android Community, which obtained a copy of French carrier SFR's update cycle, the Galaxy S4, Galaxy S3, and Galaxy Note 2 will be getting Android 4.3 in the coming months. The Galaxy S4 will be first up with an update in October. The Galaxy S3 and Note 2 will get the updates in November or December.
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According to SFR, the HTC One will also get its Android 4.3 upgrade in October.