This recent news piece from ComputerWorld reiterates ("will double battery life[...]") some claims Intel made about the battery improvements Ivy Bridge will bring to the MBA:
For being an incremental update, doesn't doubled battery life (best case scenario) seem like a huge jump?
CPU and graphics processor will be integrated on a single chip, and deliver double the performance-per-watt compared to Core processors based on the Sandy Bridge microarchitecture[...] users will also see significant power and performance enhancements with Ivy Bridge, which will consume up to half the power at the same performance as current Sandy Bridge chips, said Intel's senior fellow Tom Piazza. Piazza said Ivy Bridge could alternately deliver double the performance on the same power consumption as Sandy Bridge chips, depending on how the chip is used.
For being an incremental update, doesn't doubled battery life (best case scenario) seem like a huge jump?