This is an update on Phase 1 of the Kronos CSO's first call, informing offerors that the Government will invite some to a virtual Phase 1B pitch session for clarification. Phase 1B is estimated for the last two weeks of January 2026, with invitations going out no sooner than January 14th, 2026. An invitation to Phase 1B is not a down-select and does not guarantee advancement to Phase 2. The overall CSO will remain open until May 11th, 2026, and the Government intends to post another update by the end of the first week of February 2026. No budget or performance location is specified.