Slowly making their way onto shelves around here. I was at the Borders inside Westfield's SF Shopping Center and I saw both on the shelf. I flipped through both. I'd have to say they are my favorite
4e supplements so far, and both out on the same day. Very nice!
Very impressed with the Draconomicon art, much of which gets a full page devoted to it. For DMs who who like using dragons (and honestly, who doesn't?) I think this will be a must-have accessory. At first glance it felt lighter on fluff than the
3e draconomicon, but even so it is probably the most fluff-heavy
4e book published so far outside of the
FR Campaign Setting. At $39 I couldn't justify picking it up though. Maybe if I'd had one of those blasted 30% coupons they love sending me... but I was fresh out.
Martial Power has been detailed extensively in another thread already, but my impressions of it were good as well. And the cover is just beautiful. It really jumps out at you.