It's very different, because disclosure doesn't require you to do anything. It just requires you to be transparent about your current business. It can also, as in the U.K., be transparency on your capex and how you're investing, which gives you some view on the future.
A transition plan is the expectation of how you plan to transition to a future state. It's a more explicit business plan for change. Once again, it doesn't require you to say that you're going net zero. The expectation is that they want you to be more explicit in saying what the implications are if you aren't going to decarbonize. How do you believe your business is going to be affected? If you're an auto company that stays with just internal combustion engine vehicles, do you believe that, five or 10 years from now, you're still going to be in business?