As announced by the Apple the glass apparently shattered when a snowstorm hit the cube in the afternoon The structure was renovated at a cost of $6.7 million in 2011, this means that repairing(replacing) the glass definitely won’t be cheap, one could cost as much as $440,000.
Apple have confirmed that despite the damage the store will remain open , and they didn’t mention when the shattered glass will be replaced.
A few photos of shattered Iconic Glass Cube were posted on Instagram and Twitter by the users, here are some: