It was supposed to ship by the end of the year. In November, that "end of year" became "January." In December, "January" became "first quarter 2007." In March, no timing was mentioned at all.
On Thursday, an EBay senior manager said the product was still in beta and he couldn't even guess at a new target for launch. Guess this kind of functionality is more difficult than it seemed. At least more difficult for EBay.