Members of Congress, specifically Rep. Henry Waxman (D-Calif.) and Rep. G.K. Butterfield (D-N.C.) of the Committee on Energy and Commerce, are also pushing the issue and have sent a letter to Apple CEO Tim Cook asking for answers to a series of questions about how many apps require user consent, amongst other things.
That letter can be read here.
There is also mounting concern the address book security concerns are more widespread than currently known and that there may be a flaw in Apple's iPhone operating system, iOS. (There's a good report on the details of that here.)
How Apple will respond and enforce its own guidelines remains to be seen, but it's clear that this entire address book debacle has already forced makers of popular apps like Path, Twitter, Instagram, Foursquare and others to become more transparent about just where your address book lives.