Bluetooth -- Ozmo Devices has its eyes set squarely on you. Okay, so maybe this whole thing isn't as adversarial as advertised, but there's no denying that the aforesaid company's latest initiative will target the exact same devices that BT is embedded within now. Ozmo has announced a partnership with Intel at Computex that will extend the latter company's Cliffside WiFi Personal Area Network (PAN) technology to "low-power devices." Essentially, WiFi radios that suck less juice nowadays would take on dual roles -- accessing WLAN networks and doing the duties typically reserved for Bluetooth -- which would enable devices to have one less component stuffed within bulking things up. As of now, there's been no takers on the design, but word on the street has Belkin already testing the approach out for kicks and giggles (or maybe something way more serious).
Read - Ozmo Devices' press release
Read - WiFI PAN explained