What problem does this address?

WP AI Client 0.3.0 is now available.

What is your proposed solution?

Let's look to update to that version, test that existing experiments work as expected, and identify if there are any new functionalities to take advantage of in the plugin.

We will eventually need to look at building off the AI Client in WP Core (and then setting the WP min to 7.0) but that change can wait for a bit longer (probably until RC1?).