Now you can watch the breakup in near real-time: the European Space Agency has a Webcam on the area via satellite. The latest images are only about a day old, and it will be updated daily.
This area of Antarctica has warmed about 2.5°C in the last 50 years. The Ice Shelf is floating, so its breakup won't raise sea level.
Prof. David Vaughan of the British Antarctic Survey (BAS) said in July:
"Wilkins Ice Shelf is the most recent in a long, and growing, list of ice shelves on the Antarctic Peninsula that are responding to the rapid warming that has occurred in this area over the last fifty years.
"Current events are showing that we were being too conservative, when we made the prediction in the early 1990s that Wilkins Ice Shelf would be lost within thirty years - the truth is it is going more quickly than we guessed."
The Ice Shelf is floating, so its breakup won't raise sea level. This site from last March has a nice video of a flyover over the bridge. The BBC says the area of the Wilkins Ice Shelf is about that of the Isle of Man, or about 570 km2.
In the past 20 years, seven ice shelves along the Antarctic Peninsula have retreated or disintegrated, including the most spectacular break-up of the Larsen B Ice Shelf in 2002....
By the way, did you know they have seals down there wearing "hats" that provide temperature data? (If we can do that in the ocean, why can't we outfit mammals on land and do the same thing?)
Here's a map of where this is all taking place: