Most interesting.
Looks like Apple is trying to adapt to the market these days.
I think that it would be impossible for them to do otherwise and maintain the Air as a viable product. There are HDD, SSD, and processor options that weren't available when the Air was introduced, nor were there competing products like the Envy. One thing I think Apple will leave untouched for now is the external design, so I'm not expecting any additional ports.
Still, for people like me who've been waiting for an updated Air with more storage, a less trouble-prone processor, and maybe more RAM, this could be enough, though it'll be interesting to see how it's differentiated from the revised MacBook.