I’m a little late on this one but O2 announced the Xda terra and the Xda nova at the CeBIT show earlier this week. Both are HTC designs.
The XDA terra is a HTC Herald updated with Windows Mobile 6 Professional. Powered by a TI OMAP 200MHz processor, it comes with a 2.8 QVGA touch-screen, 64MB RAM and 128MB ROM, a slide-out keyboard , quad-band GSM/GPRS/EDGE, Wi-Fi, a microSD slot and a 2MP camera.
The XDA nova is a rebranded HTC Elf. Powered by a 200MHz TI OMAP processor and Windows Mobile 6 Professional, it will feature quad-band GSM/GPRS/EDGE capabilities, 64MB RAM and 128MB ROM, a 2.8-inch QVGA screen, a 2MP camera, and a microSD slot.
The O2 terra will be available as of May and will cost 150€ with a 2 year contract. The O2 nova will be available in June and with a 2 year contract will cost 100€.
Source: the::unwired