I don't know whether or not they've updated, but when the Unofficial Guide folks updated their "best days" and "worst days" online, due to the change in EMH days, they listed MK as the best park to visit on June 4th! I printed that on December 9th, so I assume that since then they've figured out that MK is going to be a bit crowded due to Gay Day.
I also don't know if Gay Days is going to change their "official" park days. Except for MK on Saturday, they followed the UG recommendations for the best parks to visit on each day as their "official" days at each park. Now that the UG has changed its recommendations, I don't know whether they'll change or not.
We will be at the World May 26-June 5th. I expect crowds, but I figure with 9 full park days, we should get to do pretty much everything we want.
As for Gay Days, one of my best friends COULDN'T BELIEVE that I'd take my kids to WDW, knowing that it was "gay week." In that same conversation, she told me that her 9 year old son has no idea what "gay" means. (He actually does.) One of DH's and my best friends from college is gay and lives in Tampa. We are actually planning to meet up with him at WDW that week.
From what I've been told (by my friend and others), other than avoiding MK on Saturday because of the crowds, the only other things to really avoid are the "official" hotels (there is one for guys and one for ladies) because those places are where the pary scene really is. Of course, they're probably already booked anyway.