Not at all -- the more people that read it the better. I'm not getting rich either way. ;-)

I think the InfoQ code is infoq35 if anyone else wants to use it.

Do you have any plans for discounts etc. for current purchasers if/when you release any new editions?

If you follow him on twitter, it's not uncommon for he and his coauthor @chrishouser to mention the sales, so I think they're ok with buying it discounted :)