Yes, my wife got the same thing.
Now the email of Card Production Ordered arrived today too.
On May 11, 2010, we ordered production of your new card. Please allow 30 days for your card to be mailed to you. If we need something from you we will contact you. If you move before you receive the card, call customer service at 1-800-375-5283.
If you have questions or concerns about your application or the case status results listed above, or if you have not received a decision from USCIS within the current processing time listed*, please contact USCIS Customer Service at (800) 375-5283.
*Current processing times can be found on the USCIS website at www.uscis.gov under Check My Case Status and Check Processing Times.