The Google Gemini node in n8n is maintained by the n8n team, so you’re right to point out the missing models. Unfortunately, I don’t have any information on when the Gemini node will be updated to include the 3.0 Pro models.
You might want to check the n8n changelog or the roadmap to see if there’s any mention of upcoming updates to the Google Gemini node. You could also reach out to the n8n team directly on Discord and ask about the timeline for adding those new models.