Is changing the publication date a valid update?

No. The modified date should change only when a meaningful, reviewable content or status update is made.

Can a version number be copied from another site?

No. Version details require a direct, retained source and a check time before publication.

Field	What to record
Date checked	Full date, time and time zone.
Affected page	The exact route, screen or content area reviewed.
Previous state	The last confirmed behavior, supported by retained evidence.
New state	The newly observed behavior, without guessing the reason.
User impact	The practical difference for access, navigation or account steps.
Source	An internal reference to the screenshot, check log or approved source.

The change is visible and material, not a rewritten sentence.
The evidence is current and can be reviewed by another person.
No version, package size or access result is inferred from a competitor headline.
The entry avoids promises about uptime, earnings, bonuses or outcomes.

No fabricated entry: this launch document intentionally contains no claimed Z777 version change, status event or release announcement.