The last posted Sentinal image pre-dates the last calving (estimated in orange area) and PIG is from right. My images (reply 920) are screen shots from arctic.io. and show the newly exposed end of the crack shown in yellow. The area circled in blue is the edge of the glacier, both sides of which tend to look broken and dark, break up irregularly and on the last two occasions have produced a "puff" of smaller ice behind the main 'bergs.
Perhaps interestingly, the big calvings used to have lost connection at the edges first, now major 'bergs split from the glacier without that preparation. (reply 913, video from adrianluckman), but the back pressure from the SW tributary has also gone as the calving advances upstream.