The difference between 13" and 15" for size and weight is much greater than the size and weight savings afforded by the new keyboard. Also, both the 13" and 15" MacBook Pros have the same keyboard.
On a side note, I think that a 13" monitor hits a sweet spot. It fits in a lot of bags, has just enough screen size to be productive without requiring an external monitor, and the performance difference between 13" and 15" computers is usually quite small (if it exists at all).
> The difference between 13" and 15" for size and weight is much greater than the size and weight savings afforded by the new keyboard. Also, both the 13" and 15" MacBook Pros have the same keyboard.
It's a cumulative process. My first Macbook was a white 13.3" polycarb core 2 duo. The new 15" MBP is a pound lighter, almost half as thick, and only half an inch deeper and an inch wider. Samsung has a 15" laptop that's under 3 pounds, making it very palatable even for people used to a 13"-er.
At what point along that evolution should Apple have stopped striving to get smaller?
On a side note, I think that a 13" monitor hits a sweet spot. It fits in a lot of bags, has just enough screen size to be productive without requiring an external monitor, and the performance difference between 13" and 15" computers is usually quite small (if it exists at all).