Nightfall - No, not Bluffside, sorry. I feel your pain there, trust me.
These would be a new series of locations penned by Bret Boyd (of Behind the Spells fame, among others). He's come up with a list of interesting locations for a variety of games (mostly fantasy). We're trying to figure out what's the best approach for these.
On the one hand, we both know d20 is the default and the one we'd have to go with if we included stats. On the other hand, there are other rules systems out there (mainly True20 and RuneQuest) that the customers may want to see a product like this done for, and while I don't know I'd go with a purely True20/RuneQuest approach on this matter (if only because of True20's licensing costs or RQ's market penetration), I wouldn't mind including extra stats (if we go that route). Then of course we have the idea that a compelling location, well written up, and with good adjectives embeded into the text, would allow us to present this product to the maximum number of customers, sort of what Green Ronin is going to do with the new Freeport (among many other such examples).
As for what kinds of stats, it depends. Most stats would apply to NPCs/creatures because that's just the way most systems are set up, but there could be stats for buildings or inanimate objects, for example.