Won't be getting a PS4 at launch or until next year or so but want those "free" games? No problem! You can still accept the "free purchase" off the PSN Online Store on your PC. It has been confirmed to work, so if you get your PS4 somtime in 2014, you will have games waiting for you if you used a computer to accept your "free purchases".
Provided a link in the First post of the PS4 thread under the PDM section for all to see, also in the link is talks of cross platform play between the PS4 and PS3, it's entirely up to the Publisher!
This has been posted already in the PS4 thread, thought I'd make a discussion thread for this topic as it may make a few people happy over the news !