Don't need a "analyst" for this 'news'. It would be the default expectation given that Apple typically releases new iPad Pros approximately every 1.5 years. The next one will likely be released in October or November 2025.
Apple's M4 may be all the rage for now, especially with new MacBook Pros set to hit the scene this week. That does not prevent newer leaks from doing the rounds on the internet, a recent one of which sheds light on when we can expect the company's M5 SoC.