There are a range of camera bodies to fit users with different needs and budgets. These lenses were all designed in an era when that entire range of cameras was full frame, i.e. film. Today, FF cameras from Canon cost $2K and up, and the quality (and thus, consumer popularity) of zoom lenses is an order of magnitude higher than what it was when these EF primes came out. I doubt we'll see the cheaper EF primes updated as anything other than EF-S, and very few of those, probably only one 'normal' prime, maybe one wide prime. They might update the 28/1.8, 50/1.4, and 85/1.8 as EF, as Mt. Spokane suggested - newer coatings, better AF (for the 50/1.4), and most importantly, cheaper manufacturing. Of course, those new lenses would be more expensive, meaning more profit for Canon. But, I expect their priority going forward will be on L series lenses and EF-S lenses, as it has been for the past few years.