[BearfootCoder]

As others have said, I wouldn't worry about C++ going anywhere soon. The sheer amount of historic code out there, and the difficulty of replacing that code with any of the potential alternatives mean the language is still likely to have decades of life in it, even if it did not continue to change and evolve.

Whether a change to more C++ development will be good for either you or your team is a more open question. I was primarily a C# developer and got into C++ because I ended up in a company where it was being used and had to be supported. I have never coded in Swift and have done almost nothing with objective C, so I will not comment on them. I have been coding periodically in C++ for the past five years, and to me it always feels slower, more difficult and less enjoyable to write something in C++ than to do the same thing in C#

It is true that C++ is a powerful and flexible language and there are places where you will be hard pressed to find anything that works as well as it in terms of raw performance or fine grained control. But because of its age, many features which can be taken for granted in a language like C# have had to bolted on to C++ and lots of those bolts look ugly. There is also a lot in the language, and if you're going to use a language feature then it really helps to understand it in depth, because its depressingly easy to write code that is badly wrong in ways which will not be easy or quick to detect.

If your team's need for C++ support is going to be a long term thing (ie they're still going to be needing you to work on this stuff a year or more from now) then it may be worth their time and yours bringing you in to work on the language. If not, you may well cost more in terms of what it takes to get you up to speed than the benefit once you are fully productive. (This, of course, will vary depending on many factors such as the quality of the code base, the range of language features it happens to employ, the amount of support you can expect from your co-workers and how competent you are at learning a new language. These are things that only you and your team are able to decide.)