They had the same rules in place last year. The Eagles complained about Vick not getting roughing the passer calls that other quarterbacks were and the NFL told them that if he acts like he's going to run, he's a runner even if he stops (fakes) and tries to throw the ball. That said, with the emergence of more read-option offenses popping up, I am glad the NFL re-stated it and clarified it even more.
Personally, I like that some teams are running read-option because it spices up the league a little from the same-old-thing, but I am also glad to see the NFL remove some of the protection that quarterbacks have when the quarterback takes on the role of quarterback and running back. If they did not do that, I could easily see teams running out two QB's in the backfield instead of a quarterback and running back eventually with both capable of throwing or running. In fact, that still might happen
/reality