It looks like all they did was change the name. The red crescent is still very visible, and that is still offensive. I hate to say it, but I actually agree with someone at the HuffPo again. This time it is Michelle Pilecki:
The stories heralding the "change" in the design note the new name, "The 40 Memorial Groves," and report that "a round, bowl-shaped area would replace ... a crescent-shaped cluster of maple trees." But the bowl-shaped area was always there. And if you actually look at the design (page 4 of a pdf document), you'll see that it's still a crescent -- sorry, broken circle -- of trees. Lots more trees (i.e. a bigger "crescent," but less obviously a crescent shape in this drawing), with 40 stands of trees, one for each of the Flight 93 heroes.
Though the nation's media aren't playing it that way, it's still basically the same design, but with a new name and more trees. The former should keep the RW critics happy, the latter should please the tree-hugger types.
Pilecki is wrong on one thing. This right wing critic is still not happy, even if Michelle Malkin is.
Error Theory goes into some serious detail on the problems of this memorial. He sees much more than just the red crescent.