AFAIK C++ still doesn't have a finally construct for its exceptions. Are there any plans to introduce it? Is so, when does it land?
Finally would likely just encourage people to write really awful C++ code.
(also I totally disagree that RAII is superior to finally. Finally, being lexically scoped, is far simpler, far shorter and far easier to understand. https://codecraft.co/2013/10/31/why-we-need-try-finally-not-... )
I do not know if anyone has proposed it for C++, but I would be surprised if it passed given that it doesn't accomplish much.