Valve's January 2026 rotation that swapped Train out for Anubis has left the active CS2 map pool relatively stable heading into the Cologne Major window. Trader focus now centers on Cache's long-teased return and whether Valve will clear space by removing one underutilized map before June 30. Low implied probabilities across Mirage, Inferno, Ancient, Dust 2, Nuke, and Overpass reflect the market's view that Valve typically times pool changes around major cycles or Premier season resets rather than mid-year. Recent community polls and pro pick-rate data highlight Overpass and Ancient as the most vulnerable due to lower play volume, while Mirage and Nuke maintain stronger historical resilience in the meta. Any late rework announcement or official statement from Valve could quickly shift sentiment before the deadline.