Apple this morning announced price reductions and some processor upgrades for its MacBook notebook line. The 13-inch MacBook Pro with retina display now starts at $1,499 for 128 GB of flash (down from $1,699), and $1,699 (down from $1,999) for the 256 GB version. The 13-inch MacBook Air with 256 GB of flash has been cut to $1,399, from $1,499. The 15-inch MacBook Pro now has a 2.4 GHz Intel Core i7 quad-core processor; the top-of-the-line 15-inch now has a 2.7 GHz quad-core processor. They remain priced at $2,199 and $2,799. I'd note that Mac sales in the December quarter missed Street expectations by a substantial margin. The cuts also come at a time when a flood of new thin-and-light Windows 8 laptops are showing up in retail stores.