The final draft is identical to the official standard except that the draft also has a rationale included (and thus, the draft is arguably more useful than the official standard).
Richard O'Keefe wrote to the dev-list on 3-March-03: The thing which strikes me forcibly is how few changes there are between the freely available 1.9 draft and the official standard. This includes very little in the way of typo correction...read on
Question: Are any other Smalltalk dialects fully ANSI compliant? Probably not? hjh
Squeak's Compliance
Whether Squeak should comply with ANSI is a common flame war.
Richard A. Harmon originally contributed patches to support all of the missing messages for ANSI compliance.