I have no precise knowledge of any Pokémon Go upgrades or events that took place after January 2022, when I last updated my knowledge. I suggest visiting the official Pokémon Go website, the news area of the app, or official social media channels to stay up to date on the most recent news, events, and new features.

You may also check out Pokémon Go-specific websites and community forums, where users frequently post news and updates. Pokémon Go's creator, Niantic, updates the game frequently with new features, events, and content to keep users interested.

Remember that my information might not be up to date, therefore the best way to find out about any updates to Pokémon Go is to double check with the most recent sources.