The Redmond giant on Monday started sending invites for an event scheduled on September 4 in Berlin, Germany. The company also teased an orange-themed image that said, "Ready for more" and "Join us for more face time."
Further, the teaser invite, first reported by the Verge, added, "Details to follow." Notably, the orange-themed official invite shows a camera module on the letter 'O' in the invite, tipping that we might see the long-rumoured Lumia 730, previously dubbed Superman, unveiled at the event.
Last month, Microsoft's rumoured selfie-focused smartphone was also reportedly shown off at an internal company meeting by Stephen Elop.
More recently, the rumoured Lumia 730 was leaked by a Vietnamese retailer last week - tipping the handset's design, pricing, and specifications.
According to the leaked specifications, the unannounced Lumia 730 is likely to feature a 4.7-inch HD display and will come with dual-SIM support. Under the hood, the anticipated selfie-focused handset is expected to be powered by a Snapdragon 400 processor alongside Adreno 305 GPU and 1GB of RAM.
Further, the Vietnamese retailer claimed that the rumoured Lumia 730 would sport a 6.7-megapixel rear camera and would feature a 5-megapixel front-facing camera, which will be the highlight of the rumoured device.
The Vietnamese retailer had also leaked an image that appeared to be orange themed promotional material for the rumoured Lumia 730, which seems reminiscent to the official orange-themed official invite.
In addition to the rumoured Lumia 730, Microsoft is also said to be working on another Lumia smartphone flaunting the "Nokia by Microsoft" branding, dubbed Lumia 830.
For those unaware, Samsung has confirmed its Unpacked 2014 Episode 2 event scheduled on September 3. Sony, on the other hand, is reportedly also hosting an event on the same day as Samsung. Meanwhile, Huawei has confirmed its pre-IFA 2014 event to be held on September 4 in Berlin, Germany.