I like your spirit! Yeah... I really like this device, for my purposes it's so much better than the kindle, yet even the kindle has an SDK. Sony is really missing out on a world of opportunity here.
As for linux dev resources, do you mean the tools? In the README files in my USB console post, I write about how some of the stuff works, where to get the tools, linux sources, etc: https://www.mobileread.com/forums/showthread.php?t=82714
Is this along the lines of what you had in mind, or were you thinking of something else? Feel free to ask me anything!