While it's neither official released yet nor O2 Germany has given a press release, the device, formerly known as "O2 Xda Hermes", appeared now in O2's own web shop as "O2 Xda trion".
So what's the hard facts now? It's coming with a Samsung ARM CPU with 400 MHz (instead the previously by T-Mobile announced 300 MHz only), it's quad-band GSM/GPRS/EDGE and UMTS (with a later upgrade option to HSDPA). It's sporting a 2 megapixel camera on the back (with photo light) and a QCIF camera on the front for UMTS video telephony and for sure it comes with Windows Mobile 5.0 including AKU 2 which supports the Microsoft Messaging and Security Feature Pack (push E-Mail with Exchange) and - as far as the::unwired heard - A2DP Bluetooth stereo! Also it is expected to support the SIM Access Profile. Talking about Bluetooth, the O2 trion will supports Bluetooth 2.0 and W-LAN/WiFi g. Last but not least, it has 128 MB ROM and 64 MB RAM which can be extended with microSD memory cards.
And indeed, as you can see above, the O2 version is confirmed now to have this two extra buttons around the d-pad, one for the Start menu and one for OK/closing applications.
While the Xda trion isn't available for order yet, it's just announced at O2 Germany's web shop as a "coming soon" device but you can register for an E-Mail update. Neither a price, nor a release date was given yet.
So yes, the device above looks like the earlier photos, the::unwired received exclusively from an anonymous friend before and the O2 version is indeed this grey/silver design with the silver/blue thumb keyboard, similar to the UK version of the HTC Universal (aka O2 Xda Exec). Looks good. The only disappointment might be the QVGA screen. I wish it would has a VGA screen like HTC's first UMTS device, the Universal.
UPDATE: As O2 Germany confirmed now, the Xda trion will costs - with a 24 month contract O2 Active 100 - 299,99 Euro. A price without a subscription wasn't given yet but I expect something around 699 - 799 Euro. According to O2 Germany, it can be expected for early July!
Cheers ~ Arne