Gemini 4 Carbon leak: EAP underway, possible late-October launch
A leak says Gemini 4 Carbon is in partner EAP and on LMArena, beats Argon at 3D but still weak at frontend, with release possibly late October or early November.

Gemini 4 Carbon Leaks: Its Not Far Away - Gemini 4 Carbon EAP has started and has been given to partners for testing. Its also being tested on LMArena, and I will do my best to get access to test this model. - Its on LMArena, so people will most likely get access to it soon. - The model is an upgrade over Argon and should fix the things Argon lacks. For now, its still bad at frontend, like Argon, but better at 3D. - It could be released at the end of this month or the beginning of November. The release isn't far away. I hope Gemini 4 Carbon is much better at frontend and coding and can match Opus 5.5. Argon was a good start, but it’s time to compete.
This post quotes another post: “Gemini 4 Carbon EAP begins: better 3D than Argon, weak frontend”