Kindle OS sources released

It is quite surprising that Amazon has just released the operating system sources for Kindle, including the first and second generations of Kindle as well as Kindle DX. The Kindle OS v2.1 is actually based on Linux kernel 2.6.22, with implementations of E-ink, the ebook reader and internet browser developed by Amazon. The source codes can be accessed from:
http://www.amazon.com/gp/help/customer/display.html?ie=UTF8&nodeId=200203720.

This is certainly a big step for Kindle, and Amazon already has demonstrated its ambition in the ebook business by sending out the signal that Kindle is going open source. It is clear that, on the other hand, the release of OS souces could stimulate the “jailbreak” of the Kindle devices. The DRM of Kindle ebook format should also be compromised very soon.

Update: After a fast check of the source files, I didn’t find anything related to Amazon’s proprietary softwares (such as ebook reader or internet browser). Correct me if I am wrong.