Sam Mustafa’s Webpage (Honour) has a lot of downloads for the upcoming Blucher rules. While you can’t play the game off of these downloads, you can get an idea of what the game is like. For more go to: http://www.sammustafa.com/honour/downloads/.
Just in case you missed it, Sparker’s blog has a teaser sheet from Sam Mustafa’s upcoming Blucher rules. Go to http://sparkerswargames.blogspot.com.au/2014/10/blucher-leak.html to see the sheet. I’m not that much into new rule sets as most don’t do much for me, but Sam Mustafa’s games are a step above the rest. There are a few more bits of information about the rules in the comments section.