The first piece of art has already been revealed on http://www.branhambric.com. There will be another piece tomorrow: and then, the final, full cover on April 18.
Kaleb will also have a blog tv on Saturday, April 18. http://www.blogtv.com/people/kalebnation
You can find out what time it is by following Kaleb on twitter. http://www.twitter.com/kalebnation
Here is the link to the video: http://www.youtube.com/watch?v=rAoAfb3tUjc