This is what Nvidia high ranking executive told us, today: "We are pleased to be able to confirm that 5900XT will continue to be available for some time to come and that we have no plans at this time to end of life the product. The 5900 XT has sold extremely well, worldwide, and as you said yourself 'there is huge demand for these extremely good cards' so we are in no hurry to stop selling them".
The man continued: "It's the perfect companion to the ever growing of list of games that require Nvidia GPUs to enjoy them The Way They Were Meant To Be Played." [capitals, his]
So I guess these cards will live for a while and you, the consumer won't be unhappy because it's a very nice piece of hardware and all for less than 200. µ