I have been impressed with how up-to-date Spaceflight Now is. I work in the satellite industry and once Spaceflight Now had an updated launch schedule before we actually got word from SpaceX that our launch was delayed.
Yeah they do an incredible job, seem to have things before certain official channels do as you mentioned. The company I'm employed with works with Iridium, so I like keeping track of how the NEXT deployment is going.