Update README.md

README.md

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 [Quick Start](#quick-start) · [Overview](#overview) · [Tasks](#three-benchmark-tasks) · [Comparison](#how-mathnet-compares-to-existing-math-benchmarks) · [Dataset Stats](#dataset-at-a-glance) · [Data Sources](#data-sources) · [Pipeline](#data-pipeline) · [Schema](#schema) · [License](#license) · [Citation](#citation) 
 
-> **This is the official MathNet v0.** A larger version **v1** will be uploaded by **Friday, April 24, 2026** (more countires, problems and richer metadata). Schema is stable but field values may be revised in v1.
+> **This is the official MathNet v0.** A larger version **v1** will be uploaded soon (more countires, problems and richer metadata). Schema is stable but field values may be revised in v1.
  
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 ## Quick start