This is 100% normal. Press is informed under embargo to assure information goes out quickly and widely once the information is ready/ public. Nothing nefarious about it.
Or you issue an embargoed release, allowing responsible 'spreaders' to get their ducks in a row, and then cometh the hour, cometh the copy-edited verbose well referenced pieces.
The latter is far better than the former.
From a practicality perspective it makes sense. From a propaganda perspective it’s chilling.