I am linking a recent article from Hearing Review which discusses the “gradual and then sudden” impact of technology on hearing aids, especially the convergence of hearing aids and consumer electronics.
Although the article is about Signia/Rexton hearing aids, the topics it discusses are true throughout the industry. For example, regular firmware updates which it describes are pretty much what Whisper hearing aids had promised to do. They also describe the use of DNN in Signia/Rexton hearing aids although in a different application than this is used in Oticon hearing aids.