I get excited about software, but somehow hardware always seems more exciting. With this year's World Wide Developers' Conference imminent (June 11, NZ time), there will hopefully be announcements on both fronts.
It's quite possible a new MacBook Air could be mentioned, since Intel has new processors available. Supply of new MacBook Airs, particularly the 13-inch models, has become constrained in some territories, and Intel's new Haswell chips have been claimed to offer 50% better laptop battery life compared to the current Ivy Bridge units.
The main focus of designing Haswell was to lower power consumption for laptops and tablets, but doubling graphics performance was another aim. The current standard MacBook Air 13-inch costs NZ$1799, has a 1.8GHz dual core i5 Intel CPUs, two USB 3 and a Thunderbolt port and, most importantly, the fast Solid State Drives that make some MacBook Pros so quick. You can get a 128GB (barely big enough for much beyond the system) or 256GB, or a build-to-order of a very respectable 512GB-sized SSD. These Airs are very trim and light and only have 4GB RAM. Both can be configured with i7 dual-core CPUs and a maximum of 8GB RAM.
But they aren't really built to perform hard-out tasks like movie making - they can do it, but you wouldn't want to push it too much. The Air is really a very portable writing and communications devices that can nevertheless do all the things any other Mac can do.
With better graphics processing and longer battery life, The MacBook Air would be even better in these roles - currently the in-built Intel HD Graphics 4000 card supports dual display and mirroring (which all Macs can do, of course) at 2560x1600 pixels. The current batteries give, according to Apple, up to five hours wireless and web use on the 11-inch MacBook Air with its 35-watt Lithium Polymer battery (this model starts at NZ$1449) and up to seven on the 13's 50-watt battery; both should currently give up to 30 hours 'standby time'. Imagine eight to ten hours use instead ...