A leak from earlier in 2019 suggested that the next processor designed for Wear OS devices would be based on the Snapdragon 429, an SoC that features in low-end phones and tablets. It was hypothesized to be called the Wear 2700. However, code recently added to a Qualcomm kernel source code database suggests that it is in fact to be known as the 3300 instead.
https://www.notebookcheck.net/The-next-gen-Qualcomm-smartwatch-SoC-is-now-rumored-to-be-called-the-Snapdragon-Wear-3300.440548.0.html