CoM this morning follows up the Bloomberg and WSJ iPhone nano stories with a theory of their own, albeit one with some perceived holes.

The major problem with this is that you couldn’t install apps on the iPhone nano.  Which sounds like kind of a bust.  You have to wait 10 minutes while your email app downloads? Not likely.

By “some” of the memory, we mean ALL of the memory. The iPhone nano will have no memory for onboard storage of media, our source says. It will have only enough memory to buffer media streamed from the cloud.

“I’m talking strictly storage memory here,” said our source.

The iPhone nano will pull ALL it’s content from MobileMe. When users buy a movie or TV show on iTunes, it’s available to stream to their iPhone or iPad. The service is based on technology from LaLa.com, a streaming service that Apple bought last spring and then shut down.

“It would be a mostly cloud-based iOS,” said our source.

We’re of the opinion that the thing will have a few GBs at least – if only for caching stuff like AppleTV.  Memory ain’t that expensive – maybe Apple finally lets us use MicroSD?  Naahhhhh!

Update: The Loop offers another theory