This isn't about discontinuing them, in February RIM is releasing the new OS version. This leaves them with the choice to either recall the unsold units and reload the OS and repackage them, or get as many of them out there as they can now and avoid that cost. Either way it would mean a loss of money, but the more new users they pick up now the better in the long run. Once the newer ones come out with the new OS version loaded, who will buy old stock? Sell the units now and let the users install the upgrade themselves.