The Mewtwo special download event began Sunday (2/12/12) and will run through March 6 so make sure that you have downloaded your Mewtwo before the offer ends.
Sorry about my image, I was not able to get a great shot with the camera but this is the screen you should receive if you download Mewtwo correctly.
In case you are wondering how to go about receiving your Mewtwo here are the steps
1. Insert your Pokemon Black or White game in to your DSi
2. Enter the game and start it
3. Choose “Mystery Gift” from the menu
4. Select “Receive Gift” and allow the wireless to open
5. Choose your wireless option and allow it to connect
6. Choose the gift you want to receive- “Mewtwo Returns!”
7. “Receive this gift?” >Yes
8. Once the gift has been received you will need to pick him up from the deliveryman in any Pokemon Center.
9. Enjoy your new Mewtwo!
