The BlackBerry 10 Slider codenamed "Milan" is being rumored to have been cancelled due to a hardware issue with the device. There are also rumors that none of the BlackBerry 10 devices have even been made yet. Apparently they are still in engineering under New Product Introduction (NPI). RIM is also rumored to be waiting for a new LTE dual-core processor from Qualcomm. They will have to wait for the new processor before they start producing BlackBerry 10 devices.
I really hope that Qualcomm will do its part to get these LTE dual-core processors to RIM as fast as possible so they can be properly tested on BlackBerry 10 devices. The faster RIM gets, tests and certifies these new processors, the faster the devices will be available to BlackBerry addicts across the globe.