Apple’s internal secrecy means most rumors come from supply chain sources with only partial visibility, which explains why hardware predictions tend to be more accurate than software feature rumors.
Some leakers have built track records around specific product categories, largely because their sources sit deep in one part of the supply chain rather than across the whole company.
Treating any single rumor as confirmed fact is usually a mistake; cross-referencing multiple independent sources is a more reliable way to judge credibility.