That is correct
1000 of your latest photos. With you all the time.
iCloud manages your Photo Stream efficiently so you don’t run out of storage space on your iPhone, iPad, or iPod touch. If you have Photo Stream enabled on your iOS device, every single photo you take appears in a special Photo Stream album that holds your last 1000 photos. You can delete any photos you don’t want from the Photo Stream.1 To touch up a photo or keep a favorite shot permanently, simply save it to your Camera Roll. iCloud stores new photos for 30 days, so you have plenty of time to connect your iOS device to Wi-Fi and make sure you always have your most recent shots handy.
It is strange, though, that Apple's language says Photostream (iCloud) stores new photos for 30 days, but when I access photostream on my iPad and iPhone, I see a stream that goes back more than 2 years, and has 350+ photos.
It seems strange that I can access the full photostream on iOS devices, but not on my iMac.
Are new photos going to those Photostreams? I've seen more and older photos with new photos not being added - upon resetting to get new photos only the last 1000 or last 30 days show
I'm thinking that there was a "bug" that let older photos adn it has been fixed - in any case the documented feature is the smaller of last 30 days or 1000 photos
New photos are being added, yes. That part is all working as it should.
It's just strange that I have this great photostream covering the last 2 years, and I can only access it on iOS devices. (But that's better than nothing.)
I always thought that the 1000 photos and 30 days was an either/or situation -- that iCloud would keep your photos as long as you wanted, as long as you had fewer than 1000. Guess not.