Although Motorola has announced the new Droid X, there are rumors of an updated version of the Motorola Droid. This new "Droid 2" will be very similar to the current Droid, but it will have a larger, friendlier keyboard. So, if you want a slider that includes a usable QWERTY keyboard, the Droid 2 could be the device for you.
All the other major Android smartphones are being designed without a physical keyboard. If you can't stand the on-screen keyboard, then the Droid (or the Droid 2) could be your device. Current rumors seem to suggest that the Droid 2 will be released in August on Verizon Wireless. It should come loaded with Android 2.2 (also known as Froyo).