If you want a bunch of press releases, maybe some powerpoint slides, and a few command line demo apps that run for a bit and then print out "GFLOPS PERFORMED PER SECOND = 249.44523424534534 OMGWTFBBQ!!11!" on some jury rigged prototype hardware, sure I guess Sony could do an unveiling.
Otherwise, if you're looking for some impressive demos, my gut feeling is that Sony doesn't have a whole lot worth showing yet.
Otherwise, if you're looking for some impressive demos, my gut feeling is that Sony doesn't have a whole lot worth showing yet.