Microsoft started teasing its Lumia 730 "selfie phone" last month with an invite to a press conference in Berlin on Thursday. While the invite teased "join us for more face time" and a Lumia camera, Microsoft has posted a fresh teaser today that’s simply a selfie photo. In an obvious nod to what Microsoft devices chief Stephen Elop previously described as a "selfie phone" during a private internal company meeting, it’s clear Microsoft is preparing to unveil its Lumia 730 on Thursday.

Images of the Lumia 730 leaked early last month, showing a device with a 4.7-inch display and 5-megapixel front-facing camera. New images also leaked last week and appear to show that there will be a Lumia 730 dual-SIM version and a Lumia 735 with LTE connectivity. While Microsoft's selfie teaser photo looks impressive if it came from the front-facing camera of the Lumia 730, it's not clear if this is simply a marketing photo. However, we may have already witnessed what Microsoft's upcoming "selfie phone" is capable of, thanks to Windows Phone chief Joe Belfiore. During the Chinese Cortana launch in July, Belfiore posted a selfie on his weibo account. It kicked off speculation over the source of the image, partly because Belfiore previously teased the Lumia 1020 with a selfie.

Q: did Joe Belfiore take his selfie on Microsoft’s new selfie phone? Hmmmm pic.twitter.com/I8CU2dzo7o — Tom Warren (@tomwarren) July 30, 2014

Microsoft is also expected to unveil its Lumia 830 at its press event on Thursday. Images of the Lumia 830 leaked in July, and Microsoft will include a PureView camera on the 830 to make it an "affordable high-end phone." The Verge will be attending Microsoft’s press event on Thursday, so stay tuned for coverage of all things Lumia.