API Integration key EOL

I have heard that Adobe hasPlanned EOL for  SOAP API  from February 2021, iam upgarding my applictaion to REST API, For legacy application we can create Integration Key and Access the API's.

As Oauth is not supported in my application, was planning to use Integration Key and upgrade to REST API.

But have one doubt, whether the Integration Key funcationality will also be removed in future or with SOAP EOL. If any one knows let me know