According to GSA guidelines, contractors must treat the overhaul as a combined protest-and-security event, not two separate policy changes. The White House memo on overhauling the FAR pushed the system into formal rulemaking in early 2026, and Acquisition.gov’s Part 33 guidance shows that protest procedures are being reworked at the same time. For contractors, that means protest timeliness, debriefing strategy, and agency corrective-action decisions may be evaluated under evolving language rather than a stable FAR baseline. On the security side, DoD’s CMMC rollout and FedRAMP authorization demands are increasingly treated as procurement prerequisites, not afterthoughts. The practical effect is simple: teams that rely on old proposal templates or outdated protest checklists will miss deadlines, misread clause flowdowns, and expose themselves to award delay, dismissal, or remediation costs. The safest approach in June 2026 is to track both the FAR rewrite and each agency’s deviation guide every week, especially when a solicitation touches CUI, cloud hosting, or sensitive defense data.