Polymarket is developing a new Rust-based central limit order book (CLOB) to replace its current infrastructure, which the team identifies as the source of most platform issues. The full order lifecycle, including trading, settlement, on-chain interactions, and indexing, is scheduled for completion in the test environment by October. In November, Polymarket will mirror all production traffic to the new trading cluster for result comparison against existing systems while opening testing access to market makers. The team plans to finalize the migration strategy and complete two full rehearsal drills before the official switch. If development proceeds as planned, the transition is expected to require minimal or no changes for market makers and developers.