Sorry to respond so late into this thread! From the posts I've read, most are correct in their assumptions, but I just wanted to clear up/reiterate a few things:
The reason UGA has decided to allow a Spring Recruitment this year is because for the first time, UGA has admitted incoming freshmen for the Spring semester. Since going through recruitment as a sophomore has its known disadvantages, UGA decided to level the playing field for PNM's admitted for Spring semester (as well as any girls who didn't go through recruitment or dropped out in the Fall).
For this reason, every sorority will be required to participate. There were very few sororities who didn't reach quota for the Fall, in fact. Nevertheless, there will be a set quota for each sorority that they will be required to meet to the best of their ability.
That being said, quota has yet to be set. The sororities won't know what quota is until all the numbers are in (registration ends Jan. 24th). Depending on the number of girls who choose to participate in recruitment, along with the number of open spots in the sorority, determines quota. So far the numbers being thrown around and expected is anywhere from around as little as 10 to as much as 25. No one will know for sure until all PNM's have registered.
Since this is the first time UGA has held Spring Recruitment, none of the sororities really know what to expect because it's set up quite differently from Fall recruitment.
Hope this helps! And wish all the UGA sororities and Spring PNM's good luck!