JPMorgan analyst Douglas Anmuth said in a recent research note that he believes Amazon can sell 5 million Kindle Fire tablets in Q4 this year. Given that Amazon received 95,000 pre-orders in the first 24 hours and 250,000 in the first 5 days, the demand is there and some say may even exceed that for the Apple iPad, possibly because it's hard to argue with a $199 price tag.
For comparison, Apple sold 4.7 million iPads in Q2 2011 with the release of the iPad 2. Of course, the big difference here is that Apple turns a tidy profit on each iPad sold, while Amazon is using its Kindle Fire tablet as a loss-leader in hopes of making up the difference with sales in its various content stores for books, music, video and apps. Still, 5 million units would instantly give the Fire an install base almost equal to the entire Honeycomb tablet install base that has been building all year.
source: Venture Beat