These changes may or may not hurt Apple's brand loyalty - I am a die-hard Apple-ite myself, however, and it's a BIG however, drastic changes to your Brand WILL affect your business.
Consistent branding is not just a buzzword, it is the cornerstone of your overall business strategy. All of the innovation in social media, advertising, and experiential marketing puts more ammo in our marketing arsenal, however staying true to our branding message is more important than ever.
Check out this infographic that Jessica Brandenburg created to visualize the importance of Brand consistency: