That on the right is Brian DeClercq's cover to JB's soon-to-be-released B/X Companion. I have to admit I'm pretty excited by this. I've been following the blog posts about the supplement's development for a long time and I've been mightily impressed with JB's understanding of the Moldvay/Cook/Marsh rules and his desire to hold true to their design principles. So, I have every expectation that I'll be impressed by what he done in the B/X Companion.
Plus, that cover is really well done -- attractive and evocative in its own right but also paying homage to Erol Otus's classic illustrations. I can't wait.