There's no word on what exactly the Redmond-based tech giant has planned, but based on our knowledge it could none other than the Lumia 430 Dual SIM.
Of course, Microsoft may also announce something completely unexpected. Set for New Delhi, the invite's headline reads, "The New Benchmark in Affordable Smartphones in India".
Though there isn't any additional information about the event, we can hope that it may be a press conference to announce the Lumia 430 - the company's cheapest Windows Phone 8.1 handset that it launched in March this year.
What is Lumia 430?
Back in March, Microsoft quietly launched the Lumia 430 smartphone. It's basically a low-end Windows Phone 8.1-powered device, aimed at emerging markets.
The budget handset features a 4-inch WVGA display, a dual-core Snapdragon 200 CPU, 1GB of RAM, 8GB of internal storage, and a microSD slot for expansion storage. There's a 2-megapixel rear-facing camera, alongside a VGA 0.3-megapixel front-facing shooter. The phone is powered by a 1500mAh battery inside.
The handset manufacturer claims the Lumia 430 will be the most affordable device to get Windows 10 OS update, which of course is a positive sign.
As usual, GizBot will be there at the event. In the meantime, what do you guys think Microsoft will reveal? Let us know your opinion in the comments below.