#1 is no novelty; it’s called ‘value-added public relations’ and has been preached since years.
#2 is good; I’ve been wondering why companies/pr officers have not realized this earlier?
#3 could be easily mistaken for bullshit-generator generated blurps
But even a press release is easily oversaturated with keywords…so typically American. It blurrs the line between press release and sales newsletter. Sometimes, a press release is just that – a release for the press.
#4 that’s a good one, because it looks less aggressive in a press release, but makes people click links (people like to click links).
#5 if #4, then this should be a given…
#6 if applicable. Otherwise, send a sales-oriented newsletter / presentation, and keep both media properly separated.