It's got a ways to go for sure, but the exciting thing is this is the first drug ever to make it this far, with statistically significant reduction of plaques and cognitive decline.
Don't get me wrong. I think this is the most promising one we've had, if for no other reason than the method used to develop it. They took people who lived into old age without Alzheimer's, and found antibodies from them that targeted Abeta (so they claim). Really cool stuff, if true, and very promising.