The IEEE 802.15.3a task group on high-speed personal area networking may vote to disband: The vote will happen this week. The group has been divided for years between the Intel's supported WiMedia Alliance and Freescale, the UWB pioneer via its acquisition of XtremeSpectrum. While a 75-percent majority would have been needed to put forward a draft and has never been reached, they may have that many votes among two camps to halt.
In practical terms, the market was going to decide any way, and international regulators may have a hand. In the US, both flavors of UWB are legal after the FCC issued clarifying orders or re-emphasized earlier decisions over a few years. Elsewhere, the battle for approving UWB in one or more forms as legal to operate wages on.