Becasue if it was than no, there is going to be no new season, sadly. The only reason that ABC Family announced that there is a "new season" is because they are so behind on the seasons of Gilmore Girls, that to them, it is new!
I heard about this too, but there not filming a new season. But, u know how they toon reruns in order? Well their now starting to re-run an old season. I got excited when I heard this but then I was very very sad...sniff sniff :)