Looks like the switch has started. GPT-5.5 Instant has been deprecated and 5.6 Instant is now taking its place. I already have 5.6 Instant in ChatGPT, so the rollout is definitely live for at least some accounts. I’ve attached a couple of screenshots showing it running, along with today’s updated release notes. Free and Go users are also getting 5.6 Luna as their default model this week, which is a pretty significant upgrade on its own. Nice to finally see the 5.6 rollout happening. P...