Saturday will only be the big DC shoot, with the DC sub-groups happening before the larger shoot.
Sunday will only be the big Marvel shoot, with the sub-groups again happening before the larger shoot.
There are also a large number of smaller shoots going on throughout the weekend (such as Marvel Cosmic, Teen Titans, etc.), all of which can be found in their respective threads on the SCF, along with a constantly evolving overall schedule, here:
Hop over, join the forum and see what interests you!