**On June 8, 2026 — the very day Apple was holding WWDC 2026 and officially announcing iOS 27 — Gemini claimed that the current iOS version was iOS 20 and that iOS 27 wouldn't arrive until 2033.** This wasn't a minor slip. The user posted a formal complaint on the Google Gemini Support Community, calling it "a severe case of AI hallucination and factual inaccuracy that completely ruins the user experience." The user wrote: "For an advanced LLM to confidently state that iOS 20 is running in 2026 and that iOS 27 won't arrive until 2033 is an extreme failure of basic factual retrieval and common-sense logic. Even after being corrected, the model admitted it mixed up calendars and version numbers entirely." A Google Product Expert's response — suggesting the user "try using a different model" — was met with frustration: "Suggesting to 'use a different model' is not a solution to a fundamental product issue. This is not a minor creative mistake; it is a severe factual hallucination where the AI completely failed to track the current year and iOS version timeline." **Technical breakdown:** The actual iOS release timeline: - iOS 20: Released September 2025 (not "current" by any measure) - iOS 27: Announced at WWDC on June 8, 2026 — the same day the user asked Gemini about it Gemini's error represents a fundamental temporal reasoning failure: it couldn't correlate the iOS version number with the current calendar year, even on the day the product was being publicly announced. This class of error — confident timeline hallucination — is especially dangerous because the AI presents the answer with the same certainty as a correct fact.