Those crazy people waiting in line in both NY and SF will get firsthand experience with the PlayStation Store tonight. For us sane people, here's a video of the Store you can watch in the comfort of your own office.
The overall layout of the store is straightforward, presented with tabs and a download list. The thing is, there's no way (that we could find) to consistently add stuff to the download list. There's only a "download" option and not a "queue" option, and when you're downloading, the only thing you can do is press circle for cancel. Sometimes this adds your download to the "Download List", sometimes not. And once it's on the list, you're still limited to downloading one item at a time. So we're going to say there's no queue at the moment.
Previous PS3 Coverage [Gizmodo]