Word is going around that Sprint will be unveiling the HTC Supersonic, the first handset compatible with Sprint’s 4G data network, at CTIA next week. The device should be running on Sprint’s new WiMAX network, which should offer speeds up to 10 times faster than current networks. Until now, Sprint only has WiMAX in a few dozen cities, so if you’re a frequent traveler, WiMAX might not be your favorite thing. Of course, let’s not forget the Sprint Overdrive that we recently reviewed too. Looks like we’ll have to wait a few more days will we get the full details on the HTC Supersonic. Till then, stay tuned!