Annie Maes writes:

Stardust is coming back to Earth 2 years from now. How will it come back to
Earth? Will it be a guided return or will it be picked up by another craft?

The main spacecraft will return to the vicinity of the Earth, at which
point a sample return capsule will be released on a collision course
with the Earth. Part of the way through reentry, a parachute will
slow decent. Landing will be in the Utah deset.

Where will they publish the analyses of the samples?

A scientific journal. I doubt they've made a decision as to which one
yet, though historically the 30-day reports have shown up in Science.