So few actual Mac rumors

I haven't followed MR that long to notice any big difference but it is true that there is a lot iOS rumors nowadays. I have a hypothesis why it is so. Due to the popularity of iPhone and iPad, sources try to get info about them because they most likely get a better reward from them (a good rumor will mean a lot readers for the site, thus more $). Before iPhone and iPad, Macs and iPods were the only products that Apple made so the same sources tried to get info about them. Now they just go where the money is. A rumor about next gen iMac is nothing compared to a rumor about iPhone 5.

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We're in the transition phase toward a new computing paradigm: the tablet. There's going to be more excitement and interest surrounding it.

Laptops and desktops are still useful and necessary, but they're old hat, and do not represent the kind of forward-looking growth market that the tablet/smartphone market does, which is set to explode beyond most people's expectations over the next 1-2 years.

MR is just moving with the winds of change.

The mac line is a mature line not subject to much change. The only time we see any major rumors is when intel releases a new chipset. For instance there were rumors floating around about sandy bridge and what apple might be doing.

So while many people were focused on iDevices, there were plenty of discussions in the MBP forum as to what the new MBP would be.

For instance, there were discussions on
Apple dropping the optical drive
Which GPU apple will be using
Apple going with a higher resolution display
Apple changing the case.
and few other off the wall rumors.