Interestingly enough, a new handset known as NEXUSONE has just gone through the folks at the FCC, where it bears the model number PB99100 and is built by HTC. The same FCC filing also points toward a microSD memory card slot, the inclusion of 802.11b/g Wi-Fi and Bluetooth 2.1 + EDR connectivity, quad-band GSM/GPRS/EDGE with UMTS/HSUPA on 850/1700/1900 frequencies. For the uninitiated, this would mean the 3G handset plays nice with 2Mbps uplink and 7.2Mbps downlink for both T-Mobile and AT&T networks Stateside. Should the rumor of the NEXUSONE being sold as an unlocked handset come true, it might just make the entire smartphone market all the more interesting.