From watching all the stuff going on in the media, I'm going to make a guess, just like the Amazing Criswell (remember him?)
Within two years, the mainstream nutritional thinking will be:
They will emphasize GOOD fats, especially from plant sources, but stop short of admitting saturated fats were "framed for a crime they didn't commit." (Remember The Fugitive?)
They will emphasize GOOD carbs, still pushing whole grains and fruit, but admit that processed carbs are not a good source of carbs. They won't unthrone the potato, just urge people not to fry him.
They will recommend people get ENOUGH protein, but won't be able to help themselves and set the bar too low. In addition, they will remind people that combining corn and beans count towards protein, without any mention of the carbs they contain.
They will hammer on calories still, only now the buzzwords will be PORTION CONTROL. ("Don't worry so about calories, just control your portions" will be their newest stance, worthy of the endstage in a game of Twister. Remember Twister?)
A lot of these concepts are out there floating around, but I contend they have not made it into the mainstream. Because here's a press release from March 2003 from worldwide experts:
http://www.who.int/mediacentre/releases/2003/pr20/en/
They're saying "limiting fat to between 15 and 30 percent of total daily energy intake and saturated fats to less than 10 percent of this total" (that's 25 grams of fat a day, which is what I used to eat) and "Carbohydrates, the report suggests, should provide the bulk of energy requirements – between 55 and 75 percent of daily intake" (hey, that's only 275 grams of carb a day!) and "Protein should make up a further 10-15 percent of calorie intake" (this would put me at 45 grams of protein a day, which I'm convinced is TOO LOW!)
Are my predictions seemingly contradictory? Yes, but so is most nutrional information.
That's the mainstream. So my predictions stand.