This morning on the Xbox LIVE Marketplace, Metal Gear Solid: Rising was updated from its old placeholder box art to the box art you can now see above.
As you can see, the box stars Raiden standing with his back shown and face turned.
Where Metal Gear Solid boxes would normally say “Tactical Espionage Action”, it says “Lightning Bolt Action”. This would be the complete opposite of the Metal Gear Solid series, making it a fast-paced action game with Raiden’s bad ass sword.
Killer.
With this update’s timing, I’m pretty sure we can go ahead and confirm this for E3. We’ll be safe and wait until Konami does it for us, though.