It was stated plainly and with no room for interpretation that there are developers that already have development kits for the PS4K and that they are making games that will directly target and take advantage of the higher specs of the PS4K. It was also stated that these games will in fact work for the PS4 but with considerable sacrifices made to performance.
It was also made very clear that current games would not be getting any type of performance upgrades by being played on the system and any benefits to older games would come via patch per game and per developer. When asked if this was going to happen the response was "Its a possibility but doubtful with the exception of a handful of games."
Now that you revealed everything Sony has under wraps for the rest of the year there's no point on investing on marketing strategies like E3 conferences, PSX and the rest of the events, which have been rendered pointless thanks to this leak.