Here are some options to bring yourself up to speed if you aren't already tuned in:
1.) The "Cliff Notes" version - a Reuter's article on the subject. Go here.
2.) National Public Radio report on the case. Go here.
3.) PBS consideration of the case: Judy Woodruff and National Law Journal's Marcia Coyle discuss the oral arguments in the case (5:51). For full size video and coverage, go here.
4.) Los Angeles Times Editorial Board treatment of the topic. Go here. (The irony on this web page was too great to pass up. At the same time the LA Times Editorial Board is decrying the use of warrantless GPS tracking devices, the website's Google Ad feature is hawking GPS tracking devices along the left hand bottom edge of the article. Products that will let you track things like your kids, wife and dog - without a warrant.)
Comment: One simple thought - when it comes to this topic, you ain't seen nothing yet........