Saw a 15" in the store the other day. It's the future, just not this particular iteration. The form factor is awesome--my 15" rMBP is like a boat in comparison. Make carrying a 15" as a daily driver much more practical (and the extra screen space is a big step up from 13-14" for getting work done).

The battery life will get fixed in successive iterations, I think. There is a ton more space in there for bigger batteries: https://d3nevzfk7ii3be.cloudfront.net/igi/cBFfrfQPrPBFgV1s. Compare to how packed the old 15" is: https://d3nevzfk7ii3be.cloudfront.net/igi/Jxqp6l2cEQn4olWQ.h....