I know there are several threads about smart cover compatible cases, but I thought It would be helpful if we had an actual list/matrix. Below I break them up into material and list details and availability. Prices are MSRP, cheaper prices may be available at third party vendors. Hard Shell (polycarbonate, etc.): XGear Smart Cover Enhancer Protection for Your iPad, iPhone, iPod, And MacBook Colors - Black, Clear Price - $34.99 Available Now Joy Factory SmartFit2 SmartFit2 Clear for iPad 2 - iPad / iPhone Protection - Products Colors - Clear, Smoke Price - $29.95 Available Now Marware Microshell MicroShell iPad 2 case Colors - Black, White, Pink, Silver Red Price - $39.99 Available Now *Black version only Enki Genius Enki | We've got you covered Colors - Clear, Smoke, Blue, Pink Price - $29.99 Pre-order, Available 5/2 Aviiq Smart Case AViiQ™ › Smart Case ‹ Case Stands ‹ Products Colors - Black, Gray, Light Blue, Green, Orange, Pink, Red Price - $49.99 Pre-Order Coveroo Customer iPad 2 Case Coveroo - Custom Designs on Your Phone or iPod Price - Starts at $29.99 Color - Varies Pre-order Incipio Smart Feather iPad 2 Smart feather Ultralight Hard Shell Case Price - Unknown Colors - Unknown Available in May Speck Smart Shell *Not listed on manufacturer's site* Apple Mobile: Speck iPad 2 SmartShell Case (5 Colors) - Hard Cases - Cases - iPad 2G - iPad | Gleemobile.com Colors - Black, Light Blue, Green, Orange, Pink Price - $29.99 *from third-part vendor Available Now *claim from third-party vendor Belkin Snap Shield http://www.belkin.com/uk/IWCatProductPage.process?Product_Id=544455 Colors - Unknown Price - Unknown *Has been found at Best Buy (not listed on their site) for $39.99 Availability Unknown Simplism Smart BACK Cover http://www.simplism.jp/en/products/ipad/smart_back_cover/index.html Colors - Clear, Black, White Price - $25 *iLounge states $25, but price not listed on Simplism's site. Availability Unknown Soft Shell (TPU, Silicone, etc.): Boxwave Smart Sleeve iPad 2 Smart Sleeve - A low profile iPad 2 case that pairs perfectly with Apple?s Smart Cover and provides durable protection. Colors - All Smart Cover colors Price - $29.95 Available Now (black, gray only). Other colors available 4/29. Maclove Jumper Jumper - macloveworld Colors - All Smart Cover colors Price - $39.00 Available Now iLuv Smart Back Cover iLuv http://www.mobilecityonline.com/wireless/store/productdetail.asp?productid=27919 Colors - All Smart Cover Colors Price - TBD, but third party site lists $19.99 Availability TBD XGear Flexible Shield http://www.xgearlive.com/products/n...or-apple-ipad-2-pre-order-shipping-april-29th Colors - Black, Red, Blue, Orange, Frost, Green Price - $19.99 Available 4/29 Other Shell: Pielframa iMagnum Apple iPad 2 cases PIEL FRAMA Colors - All Smart Cover Colors Price - $129 USD Available Now, but 15 day delivery time. Happy Owl Studio Leather Shell & Shell iPad 2 line sneak peek... — Happy Owl Studio Colors - TBD, but probably All Smart Cover colors Price - TBD Availablity Unknown Melko Leather Snap Cover http://www.melkco.com/scripts/main/viewitem-APIPA2LOLT1BKLC-IPA2.html Colors - Black, Red, Blue Carbon Fiber Price - $59 Pre-Order SGP Griff for iPad 2 http://www.sgpstore.com/tablets/apple/ipad-2/sgp-ipad-2-leather-case-griff-series.html Colors - White, Black, Lime, Dante Red, Solaris Orange, Sherbet Pink, Tender Blue, Vintage Brown. Price - $49.99 Available Now *Red, Blue, and Brown only. No details on the other colors. I'm sure there are others I'm either missing or will be announced soon. If you find something, please post it here and I can update the list. Also, I did not list the eBay TPU and shells since they have been mentioned here before, and I don't want to promote any one seller.