We have recently heard that Nokia Windows RT which was codenamed Sirius, will come out as Nokia Lumia 2520. It is rumored that Sirius and Nokia Lumia 1520 could be launched at the Nokia Press Event on October 22th.
Nokia Windows RT is expected to come out the box with Quad-Core Qualcomm Snapdragon 800 chipset, 10-inch screen with 1080p resolution display, with a microSD card slot expandable upto 32 gigs, 2GB of RAM, 6 megapixels back camera and 2 megapixels front camera. It may also facilitates 10 hours battery with LTE connectivity and micro HDMI slot.
Currently there is no news about the availability, the pricing of the device is expected to be $499. So, let's wait and watch for any news about the Sirius or Lumia 2520.
Source: evleaks (Twitter)