The biggest Shaman change is the one to Earth Shield (which only affects Resto, since they're the only ones that can use it-- it costs less mana, and lasts for six charges instead of 10 (not great for raiders, but not bad for PvPers), and there was a small buff to Healing Grace (now gives a chance to avoid dispells). There is one Elemental change-- Call of Thunder now gives 5% crit rather than crit only to Lightning spells. But those changes do nothing to alleviate Shaman concerns (and you might have heard that there were many), and the rest of the changes are bugfixes and UI updates almost no one was asking for.
Yes, yes, QQ more and all that, but the story here is that Shamans have been basically ignored yet again, even while Blizzard admits that there are problems with the class. So when are the fixes coming? Blizzard has already said they're not making sweeping changes to any classes in these content patches-- maybe our chance as Shamans will finally come with the expansion.