This news is useless for you, if you are not a developer or not a pro user of your Mac / PC,  if you have noticed or know, Apple’s iTunes is a 32-bit app and lot of folks wondering when they will kick out the 64-bit compatible version of iTunes, So now it seems that Apple has to fulfill all the requirements of users, Its reported by 9to5mac folks that in Mac OS X Lion, the developer’s only release of iTunes 10.5 is based on 64-bit finally but the developer version of iPhoto, with the new facility of photo-streaming to the iCloud service is still stuck on 32-bit program.