DeepSeek's announcement of the DeepSeek-V4 preview release has sparked a dispute on Polymarket regarding its official release date. The controversy centers on whether the preview version qualifies as the official successor to DeepSeek-V3, as per the settlement rules. These rules stipulate that only core evolutionary versions explicitly positioned as successors qualify, excluding derivative or preview models. Opponents argue that the April 24 release is a preview, not the official V4, and thus should not be settled as a "Yes" for the release date. The matter has entered three rounds of UMA dispute resolution.