This update allows you to move images between mats while you're at the cut preview screen. That means you don't have to go back to the design screen to move your images to a different cutting mat.
In this image below you can see that I have seven hearts on the canvas.
When I click "Send to Mat" the images are placed on two separate mats with four hearts on one mat and three on the other.
If I tap on one of the hearts on the second mat you will see 3 dots appear in the top left corner of that image.
I tap on the Move to another Mat option and this box appears.
I click on Mat 1 and that heart will be moved to that mat. The heart I moved has been placed on top of one of the other hearts and has a yellow border around it.
I can tap on that heart and drag it into the middle of the mat.
Now with that image still selected I can use the rotate handle to turn it 180deg.
You also have the option of hiding images on the cut screen. This is useful if you want to recut just some of the images on a mat.
Tap on the three dots then tap Hide Selected.
To unhide an image tap the "Hidden" button below the mat and select the images you wish to unhide.
You have the option of moving images to a new mat. It's great if you want to change the colour of some of your images at the last minute.
Just select the Create New Mat option at this screen.
You can find more information on this great new feature here: http://help.cricut.com/help/move-hide-iOS