The German website, heise online, has reported that BenQ is pulling out of the optical drive business in Europe due to small profit margins. Here's part of their report, translated from German:
Parallel to the new announcements to LiteOn BenQ communicated that one will withdraw oneself until further notice at least into Europe from the business with optical drive assemblies. The last DVD burner, which is sold under the label BenQ, is the DW-1670. The Blu ray burner planned first will appear no more. Support and warranty, inclusive firmware updates are however further ensured for past customers, since BenQ on other markets will offer further drive assemblies.

As reason BenQ Germany indicated the extremely small profit margins in the range of optical data storage. BenQ had entered only 2003 by a Joint venture with Philips into the market of the DVD burners and in relatively short time a name with qualitatively high-quality DVD burners had made themselves.
We've heard rumors that BenQ is also pulling out of the US market. Considering that the company never released the DW-1670 over here, I'd have to say that this is probably true. If you'd like to read more, the entire article can be found here.