Update: It's back in the story. Everyone can relax.
Original story: If you have been wanting to try out the Opera Mini web browser for Windows Phone, you will have to wait a little while longer. The app has once again been removed from the Windows Phone Store, and an Opera rep has confirmed on Twitter that it is working to resolve the issue.
The browser was taken down earlier this morning and, according to this message from an Opera rep on Twitter, it is indeed aware of the problem:
"Yes, we are currently working with Windows on the issue. Sorry for the inconvenience!"
So far, there's no word on what the issue might be or how long it will take before Opera Mini comes back to the Windows Phone Store. This is not the first time this has happened; the app was removed from circulation for several hours in June.
Source: Opera (Twitter)