Focusing on VS Code for at least the next few weeks, but we've planned from the start! You can read more here (https://continue.dev/docs/how-continue-works), but the Continue server abstracts over the IDE APIs, so it will be easier to support any IDE, even letting you run Continue in "headless mode" from the a Python script, the CLI, or in CI/CD.
I use both pycharm and Webstorm, so an extension would be great! On the plus side, since they are all basically reskins of IntelliJ, one plug-in should work for all of the jetbrains suite.