I think there's nothing wrong at all. These announcement of games that wont be released for awhile provides longevity to that particular system, giving buyers a better piece of mind when choosing a system, knowing that there are particular games they're looking forward to will be release down the road.
Personally, after E3 2015 I was glad to know that my PS4 was getting games in the years to come.
Also it's a marketing thing for media, you hear news about movies being made but wont be released in the next or two either. That's just how the world works in this industry.







