"The second Windows Mobile Professional smartphone (Pocket PC Phone Edition), O2 Germany announced today, is its own version of the HTC Elf which O2 will launch as Xda nova. Like the O2 Xda terra, also the Xda nova is powered by Microsoft's new Windows Mobile 6 and the Xda nova features quadband GSM/GPRS/EDGE as well as Bluetooth 2.0 and W-LAN b/g and is O2's new entry-level Windows Mobile device for consumers. Powered by a TI OMAP CPU at 200 MHz, the Elf is sporting 128 MB ROM and 64 MB RAM which can be extended with microSD memory cards." Source.

It is an old tradition that HTC will still continue to sell their device to operators in certain coverage areas, however O2 has got plans with their branded devices.