How is this going to work?
Are there going to be games for it that won't run on the cheaper version? Will they design games for this and simply cut out graphics features to make it run on the slower version? Will companies really invest the money in making two versions that both work well?
Are there going to be games for it that won't run on the cheaper version?
NO. No, no, no, no, no.*
(*Yes, in a few years. Once Playstation thinks you forgot and installation penetration numbers are high enough for the "news" to not give a shit they reneged.)