The first batch is now sold out. You can still order but 1-3 weeks delivery time. See the "More Buying Choices" box after using this link.
If you missed the play.com card yesterday then give Amazon a go.
Class 2 Speed performance rating
Cards include security feature for protection of copyrighted data
SDHC cards (4GB, 8GB, 16GB, and 32GB) supports SDHC compatible host devices
Optimal performance for your digital device
High quality and reliability backed by a 5-year limited warranty
The image is of a Class 4 card but the blurb states class 2