

The Galaxy S11 has a high probability of using a new 108MP sensor.
— Ice universe (@UniverseIce) November 4, 2019
News of Samsung's potential plans comes from prominent leaker Ice Universe (@UniverseIce on Twitter), who has an excellent track record with this sort of thing. That said. this is not a foregone conclusion. Instead, Ice Universe states is "a high probability" the Galaxy S11 emerges with a 108MP camera sensor.
Will Samsung's 108MP ISOCELL Bright IMX Camera Sensor Find Its Way To The Galaxy S11?

Samsung announced a 108-megapixel ISOCELL Bright HMX mobile camera sensor back in August
"For ISOCELL Bright HMX, Xiaomi and Samsung have worked closely together from the early conceptual stage to production that has resulted in a groundbreaking 108MP image sensor. We are very pleased that picture resolutions previously available only in a few top-tier DSLR cameras can now be designed into smartphones,” Lin Bin, co-founder and president of Xiaomi, said at the time.
The sensor is the first to adopt a large 1/1.33-inch size, allowing it to absorb more light than a smaller sensor. In theory, this should result in clearer photos in poor lighting, with less grain and noise mucking up images.
Assuming things went to plan, Samsung is already mass producing the sensor. Likewise, it's expected Samsung will unveil the Galaxy S11 in February 2020.