@Lansdren:
I agree, if it takes longer to get a better quality product out, I can be patient. But for a product that's been worked on for a while and will soon see the light of day (like the Runner's Toolkit), I'd rather not have it be delayed a couple more months so they can get errata out for a book that's been published.
@Mäx:
I don't know what JH has on his desk ready to go, so I can't say that errata is already made for the products that they can release to the public. Yes, they have a collection of errata and have fixed it in 2nd printings and such, but they may not have it in a file and/or format that they can just publish to PDF and put it on the site. Like I said, I don't know what's on everyone's plates right now nor what is readily available to them. Also remember, as was brought up before, they are working for a company and have people they report to. If the higher-ups tell them to focus on new (income-generating) products versus publishing (free) errata, they have to focus their energy on the wishes of their bosses.