Sony already had this game on their PSP. It hasn't been sold online through the PS Store yet, despite being ideal for that purpose. It hasn't been announced for PS3 via PSN, and there's no indication that will happen.
Seriously, what are the people at Sony thinking? This is a little slap in the face, granted, but it shouldn't have happened this way in the first place.
There is a rumor in the latest EGM that all PSP games published in 2009 will also be sold through the online store. If Sony really does that, I'll forgive them some of the thickheaded blunders they've committed this year. To make good on their promise to make the PSN service a free, serious alternative to XBL, it's precisely the kind of thing they'll need to do.
There are plenty of retro remakes on XBLA, but it seems as though the PSN owners aren't interested in looking back. The XBLA version will feature nice Llamasoft "neon" visualizations.
It is so much better now that you can download directly to the PSP via the store interface. They should have done this a year ago...or from the start.
I had a PC, I had a PS3, but there was no way I was going to download on a second device to get somthing on my PSP. That plan was just silly, it should have been plan-B for the shmucks without wi-fi. Plan-A from the start should have been to download everything direct.
But that was the past, so I look forward to the future where I might actully buy or at least try games directly off the store.