IMO async/await and Combine are two completely different things.
What is the alternative to Combine's CurrentValueSubject or combineLatest()?
> What is the alternative to Combine's CurrentValueSubject or combineLatest()?
combine latest et al can be found in async algorithms from apple*https://github.com/apple/swift-async-algorithms
* though current value subject is not there its not hard to make one if you need it
AsyncExtensions implements many Combine-like patterns in structured concurrency.
That said, some of the, erm, "new ways" to solve problems have been significant advancements. EG: Async/Await was a huge improvement over Combine for a wide variety of scenarios.