Huawei has officially confirmed that it will unveil the Nova 15 series of smartphones on December 22 in China. The lineup is confirmed to feature three phones, namely the Nova 15, Nova 15 Pro, and Nova 15 Ultra. Ahead of the launch, all three phones are available for pre-orders, and the official listings have revealed their design, colour options, and configurations.
Huawei Nova 15 series design, color options, configurations

The Nova 15 series will arrive in four color options: Dynamic Green, Easy Match Purple, Zero Degree White, and Phantom Night Black. While all three phones share the same color options, the standard model sports a different design compared to the Pro and Ultra editions.
The Nova 15 features an oval-shaped camera module similar to the previous generation. However, the Pro and Ultra models have a completely different rear design. As seen in the listings, both models feature a raised rectangular module housing two circular islands on the left and right. One of the islands houses three cameras, while the other includes an LED flash.

Huawei Nova 15 
Huawei Nova 15 Pro 
Huawei Nova 15 Ultra
Rumours suggest that the Huawei Nova 15 and Nova 15 Pro will be powered by the Kirin 8020 chipset. The official listings reveal that both models will be available in 12GB+256GB and 12GB+512GB configurations.
On the other hand, the Nova 15 Ultra is expected to feature the Kirin 9010S and Kirin 9020A chipsets. It is expected to arrive in three configurations: 12GB+256GB, 12GB+512GB, and 12GB+1TB. Huawei is yet to reveal the remaining specifications of these phones.