Since I am watching this series on Netflix I noticed that there is no Charmed theme song “How soon is now?” during the opening credits. After doing some research it appears that the Smiths’ song license expired after season 8. Besides, efforts to get it back in time for the Region 1 release failed. “How Soon Is Now?” was replaced by hard-rock instrumental music (which sucks comparing to the original one).
Charmed opening credits of season 3 on Netflix :
And for the nostalgics, Charmed original opening credits of all seasons :