We’ve received word from one of our sources, who says the BlackBerry 10 slider, codenamed Milan, has been canned. We haven’t received specific details just yet, but it is apparently an issue with hardware.

None of the BlackBerry 10 devices have been made yet. They are still in engineering, under New Product Introduction (NPI). RIM is allegedly waiting for a new LTE dual-core chipset from Qualcomm before they start production.

For now, we can only guess the Milan has been cancelled for possible obvious reasons. A portrait slider with a rumored 4.2-in screen would be quite awkward. Perhaps RIM is going back to the drawing board to pursue a more horizontal approach we told you about last year. Keep it locked to N4BB as we attain more details on the matter.