On June 10, 2013, Apple released another update in the same form factor as the 2012 model during the company 's Worldwide Developer Conference (WWDC). The 11 '' and 13 '' models have a minimum standard 4 GB RAM, with a maximum configuration of 8 GB. Both models are powered by the Haswell ULT 1.3 GHz dual - core Intel Core i5 processors, with Turbo Boost up to 2.6 GHz, while a 1.7 GHz Dual - Core i7, with Turbo Boost up to 3.3 GHz, option is also available. Each model 's storage standard is 128 GB SSD, upgradeable to 256 GB and 512 GB SSD. Due to Haswell CPUs, battery life has considerably improved from the previous generation, and the mid-2013 models are capable of 9 hours on the 11 '' model and 12 hours on the 13 '' model; a team of reviewers exceeded expected battery life ratings during their test.
when did the newest macbook air come out
June 10, 2013