AFAICT bluetooth will *not* be accessible from applications made with the SDK. If someone finds a hack around it Apple will just bar their app from the "App Store." That means no bluetooth keyboard support, no bluetooth gps support, no serial-over-bluetooth support. As many purchasers of the Nokia Internet Tablets learned, "Don't purchase a device based on what you think it might be capable of, buy it based on what it *is* capable of."