I would assume (hopefully) that the following is true: my guess is that Tesla is currently executing a similar plan to produce solar products in the same format they produced the cars - expensive, high end up front. Roll your moderate price, high end products with the income, rinse and repeat.

I think if this is the case, they certainly don't want to hint at it incase they lose consumers who will sit back and wait for the cheaper option they ironically wouldn't arrive.