ButtonTitles.m

- (void)viewDidLoad;
{
    [super viewDidLoad];
    self.button.enabled = NO;
    [self.button setTitle:@"Foo" forState:UIControlStateNormal];
}

- (IBAction)changeTitle:(id)sender;
{
    [self.button setTitle:@"Bar" forState:UIControlStateNormal];

    NSLog(@"current title: %@; title label text: %@", self.button.currentTitle, self.button.titleLabel.text);
    // Prints "current title: Bar; title label text: Foo"

    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(1.0 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{

        NSLog(@"current title: %@, title label text: %@", self.button.currentTitle, self.button.titleLabel.text);
        // on iOS 7.0, prints "current title: Bar, title label text: Bar"
        // on iOS 7.1, prints "current title: Bar, title label text: Foo"

    });
}