So the PSP Launcher for running homebrew code on your
PSP has been out for a couple of weeks, and
now the commercial cat appears to be out of the bag. The new launcher will play Lumines from a Memory Stick — albeit
without sound — on your version 1.5 firmware PSP. Lots of folks are testifying that this is legit and working, so you
know Sony's sweating under the collar right about now.
[Thanks, Ian Nott and Bootes]