In a weekend update to investors, KGI analyst Ming-Chi Kuo said the iPhone 7 will feature much faster processor speeds, waterproofing and new glossy “piano black” and “dark black” colors, among other upgrades. The two new black color options are said to be replacing space gray alongside Apple’s existing gold, rose gold and silver iPhone colors. Previous SIM tray leaks seemed to show a glossy black color and alleged product…