Wizards posted new errata for the 4th edition core books today. Most interestingly are the changes that have been made to skill challenges.
I’ve only glanced through the errata at this point but it certainly seems that they are addressing the concerns that skill challenges, especially at early levels, were too difficult. If I’m not mistaken, it also appears they no longer require all party members to participate in the challenge. This rule is/was a bit silly but I also understood it in that they wanted to require all players pay attention to which skills they have and think creatively about how to use them.
I might write more about this later but for now go check out the changes!