It's not only the EVO 4G hitting shelves today; O2's Dell Streak, the 5-inch Android MID, is also up for sale. Priced from free if you're willing to sign a new contract (either for voice & data, or just for data) or £349 for the 16GB model contract-free, the Streak runs a 1GHz Qualcomm Snapdragon CPU, has dualband 3G/UMTS and a 5-megapixel autofocus camera.
There's also a front-facing camera for video calls, a microSD card slot for augmenting the onboard storage, and a copy of Android 1.6 complete with some of Dell's own customizations. The company has promised an Android 2.2 Froyo update later in 2010. Full pricing can be found here and our hands-on report here.
O2 Dell Streak hands-on: