What is the difference between PancakeSwap V2 and v3?

Excuse me, could you please explain the fundamental differences between PancakeSwap V2 and its latest iteration, V3? As a crypto enthusiast, I'm keen to understand the advancements and potential benefits of the updated version. Specifically, how do the two versions differ in terms of transaction speed, cost efficiency, and the overall user experience? Additionally, are there any notable changes in the types of cryptocurrencies or tokens supported by V3? I'm looking forward to gaining a clearer picture of these crucial distinctions.