Sennheiser is to release the first commercially available wireless earbuds that aren't connected to each other by a cord. (Depending on how easily you lose devices, that may or may not be a good thing.) The "MX W1" are about the size of common Bluetooth headsets and use wireless technology from Kleer, the first wireless audio standards that seems to provide a decent audio signal while maintaining an acceptable battery life.
The MX W1s will be available in May for around $600, which is monstrously overpriced. Worse, they look very awkward, both visually and in the way they attach to the ear. I'm glad to see these Kleer-based headphones finally hitting the shelves, but I think I'll wait for a couple years for the sting in the wallet to mellow. Plus I want the Kleer transmitters to be built into my audio devices so I don't have to attach a dongle.