In a vague (but less vague than usual) press release to readers, Amazon says they have sold “millions” of Kindles in the last quarter.

Here’s an excerpt: “Thank you Kindle customers! Thanks to you, in just the first 73 days of this holiday quarter, we’ve already sold millions of our all-new Kindles with the latest E Ink Pearl display. In fact, in the last 73 days, readers have purchased more Kindles than we sold during all of 2009. We’re grateful for and energized by the overwhelming customer response.”

Kindle customers were happy with the news, posting over 45 comments since Amazon released the news seven hours ago.