When will Google ship the flagship version of Gemini 4 to general availability?

The forecasted ship dates are March 15, 2027 (10th percentile), May 1, 2027 (25th percentile), June 15, 2027 (50th percentile), October 1, 2027 (75th percentile), and February 15, 2028 (90th percentile). Initial logic and parameters regarding the July 21, 2026 pre-training start reuters.com, standard evaluation timelines wilmerhale.com, and organizational churn are validated and established context. Standard processing applied for the mid-2027 estimations. Jumping directly to the final transformation: the upper tail extends into early 2028 to maintain consistency with an estimated 15% risk that organizational delays miss the 2027 window entirely, consistent with related tracking estimates .