The Tensor G3 will be the first SoC to be built on Samsung's 3nm GAA architecture, which marks a significant collaboration between Samsung and Google. The Exynos team has also assisted with the development of Tensor 3 since 2022, which explains why the Exynos 2300 has been delayed until Q3 or potentially cancelled.
Google has already received early samples of the G3 as of August 10th, 2022, and will receive more samples in November 2022 and February 2023. The final version of the Tensor G3 will be released in April 2023, and the first batch of Samsung's 3nm chip will be delivered by July 2023.
With the Tensor 3 ML (AI) performance being significantly stronger, with a 400-600% boost over Tensor 2, it should not be underestimated this time if it is built on 3nm process instead of Samsung's 4nm LPP, which is a possibility.