New models: you can plug in your API key to try out the newest gpt-4 and gpt-3 turbo models. We're evaluating the coding skills of these models before rolling out to pro users.
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Command-dot: you can now use the Command-dot menu to have Command-K fix lint errors inline.
Apply chat suggestions: click on the play button on any code block to have the AI apply in-chat suggestions to your current file.
Copilot++ (beta): this is an "add-on" to Copilot that suggests diffs around your cursor, using your recent edits as context. To enable it, go to the "More" tab in the right chat bar. Note: to cover the costs of the AI, this is only available for pro users. This is very experimental, so don't expect too much yet! Your feedback will decide which direction we take this.