Government stops warrantless domestic surveillance.... do we believe them?

Last week the government announced that it will no longer operate domestic surveillance without a warrant. Is this a big deal? The reason I ask is... Do We Believe them?!? This administration has been in office for almost exactly 6 years now and if we have learned only one thing about them it is that we can't take at face value anything this administration officially says. For the next 2 years (at least that long, no gaurantee things will change once a new administration is in office, regardless of the party) we can't believe anything that is announced coming out of Washington.