You should see 9 new performance guidelines in Guidance Explorer (GE). Well, not entirely new, but refactored and cleaned up. Prashant Bansode (from our original Improving .NET Performance guide team) was busy while I was out of office for the holidays. What you'll notice is that many of the guidelines are missing problem and solution examples. Job #1 is first putting the guidance into this form. Our new schema for guidelines is more elaborate than the original guidance, which means we'll have information holes. Fleshing out the missing information would be job next.
BTW - if you're using Guidance Explorer and have an interesting story on how you've used it, please share it with us at email@example.com.