The first impression of an iPad Air is that it feels more solid, as if there's very little air inside, writes Mark Webster.

I downloaded OS 10.9 'Mavericks' as soon as it appeared in the Mac App store on Wednesday morning, NZ time.

Details - and prices - for the new iPads and Macs released today here.

Much is made of Apple's secrecy, its jealously guarded release program, technical development process and even that around its designs.