This is the Continuous Integration Build of FHIR (will be incorrect/inconsistent at times).
See the Directory of published versions

1.11 HL7, ANSI and the FHIR Standard

FHIR Management Group

Maturity Level: N/A

Standards Status: Informative

FHIR Release 5 will not be submitted to ANSI for consideration as a Normative standard. None of the new content in R5 is considered Normative, and will be subject for further review during the review and ballot process for Release 6. Note that content that was normative for Release 4 remains in effect normative, and will be treated accordingly during the R6 process.