When you're a big, multi-billion dollar government agency you can't just come right out and admit that your advice has been completely wrong for decades, or the public might realize that you actually don't have the foggiest idea what you're doing. So for the past decade, their advice has been ever so slowly but surely shifting away from the mistaken beliefs of the past. Every revision of the recommendations appears to be a bit more realistic. Eventually they will come around to the same positions that we have held for a long time, and maybe the health of the general public will begin to increase, for a change.
The newest guidelines no longer put a top limit on fat intake. And they finally realized (for the first time) that sugar may not be the best thing that we can eat. And they finally officially admit that eggs are a healthy source of protein, after all. Imagine that? Humans and their ancestors have only been eating fat and eggs for a couple of million years, so far.
Here are the new guidelines at health.gov. Incidentally, that term (health.gov) would be the mother of all oxymorons except that in order to officially be an oxymoron, a combination of an adjective and a noun are required, and health.gov is of course composed of 2 nouns, so I reckon it isn't eligible for that distinguished honor.
Dietary Guidelines
Here is Medscape's take on it:
New Dietary Guidelines: Less Sugar, Salt; Coffee OK
Yeah, you sure wouldn't want to start eating a healthy diet all at once.“By focusing on small shifts in what we eat and drink, eating healthy becomes more manageable,” Sylvia Burwell, secretary of Health and Human Services, says in a statement.
Let's drag it out for another 10 or 12 years so that no one becomes too healthy too soon. After all, dragging things out is 1 thing at which the government excels. 
Tex
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I certainly wouldn't argue against that suggestion. Health almost always takes a back seat to politics in their recommendations.
