There is ONE, only ONE book being released in Kickstarter! I don't know where people are getting the 2 book idea from!
It's a book that contains Rules and Background, thus named a 'Rules and Background Book', if it was multiple, it would be 'A rules and a Background book', or 'the rules and background books'...
Strange language is ours and easy to misinterpret.
Anywho!
All I can confirm for certain is that each miniature will come with a stat card. This will contain all the information you need to use that character. As for being in the rulebook, I have no confirmation on that.
Do try the rules, I hope you like them! They are a bit rough around the edges, but I believe Jarek has done a great job. Equally, the community has been great in getting involved with sending out constructive feedback.
There is also no confirmation as to whether this product will be available to LGS (that does not mean it will not, it just means it may not, especially not straight away). Your best bet would be to encourage gamers with demos of the Beta test rules, show off the new miniatures etc. Get people to pledge, even a small one for a faction and rulebook. Once they have them, play it at the LGS.