The poster for the Realme 10 Ultra that has emerged on Weibo looks to be a fan-made artwork. After discontinuing the X-series, Realme has been releasing flagship phones under the "GT" brand.
The features listed on the Realme 10 Ultra poster look to be too fantastic to be true for a phone in the numbered series. According to the ad, the smartphone has a Snapdragon 8 Gen 2 CPU, a 200-megapixel main camera, with 2160Hz PWM dimming. The phone's picture suggests that it has a curved edge display but no apparent front camera.
While the Realme 10 Ultra may not exist, some speculate that the Realme 10 series will include a Snapdragon 8 Plus Gen 1 smartphone. It will most likely have a 6.7-inch OLED display with curved edges. It is reported to have a Full HD+ resolution of 1080 x 2400 pixels, 10-bit colours, 2160Hz PMW dimming, and a 2.3mm narrow bottom bezel. While the Realme 10 Pro with Dimensity 1080 is slated to be released later this month, there is no indication on the marketing or release date of the SD8+G1 Realme phone.