1) Why would you release a new OS X and not come out with any new hardware updates that take even more advantage of the new OS?
2) Does Apple just not care about this quarter and the lead up to the holiday season?
1) They did, it occurred earlier this year. From a business view, it would be a waste of money to update your offerings constantly (new ads, training, tech support etc.).
2) They do, thats what the Sept7 session is for. iPods are more commonly given as presents than Notebooks. Refreshing the whole Apple line up is too resource consuming.