The Nokia Lumia 900 was first spotted in an app stat chart, and its specs were leaked a couple of days ago. The Nokia Lumia 900 is said to feature a 4.3″ AMOLED display, a 1.4GHz processor, and will be running on Windows Phone Tango. If the February release date for the phone is accurate, it looks like we’ll be getting an official announcement in the near future. Stay tuned.
Update 12/16: this turns out to be a human error from @swisscom_care. They have since updated this with a new tweet: “@Gimly81 The Nokia Lumia 710 will be available by end of Feb. We’re not informed about the device you mentioned. Please excuse the mistake.” No Lumia 900 from Swisscom after all.