Why do two dates appear?
The June announcement was superseded by Capcom’s 2 July update. Use the newer announcement when comparing old trailers, articles and storefronts.
Date versus unlock time
A release date is not an exact unlock time for every region. The English Steam data checked here displays 3 September; this page does not infer a timezone from that field. Check your regional store before buying.
Questions, answered
Is September 25 still the launch date?
No. It remains visible in older announcements, but Capcom subsequently brought the release forward.