With Advanced Remote Play, PSP owners can access content stored on the PS3 from any wi-fi connection in the world. Not only will the new PS3 1.80 firmware be necessary for Remote Play to properly function, but according new press materials, PSP firmware 3.50 will also be required. According to Sony, firmware 3.50 will be available "at the end of May," although more specifics were not provided. Additional enhancements to be found on the firmware were not made available, but we're thinking it might have something to do with PSP's newfound VoIP functionality.
[Via PS3 Fanboy]