If the PS3 Slim is legit and releases at $299 - What will it do for sales?

[Lostplanet22]

One thing I don't get why will it be cheaper?

When PS2 slim was released the older PS2's (bricks) became cheaper.

Wouldn't it be the same in this case?

I expect the older model => 299

Slim 399

The older model is sold out => Slim drops to 299.