http://seekingalpha.com/news/3213925-expecting-nx-console-disappointment-macquarie-cuts-nintendo-neutral
The Macquarie banking group believe the NX reveal will happen next week and are lowering the forcast of Nintendo's share price as they believe the NX will be a disappointment.
The rumours do suggest this but I can't see 4 NX games for $100 with the bundle. I could be wrong though. Nintendo has said they don't want to sell the NX at a loss.
If the $299 and $399 prices are correct then the $399 is not a NX + game bundle as games don't cost $100 in the US.
The $399 NX pack I think will be base NX + tie in game (think wiisports or NintendoLand but for the NX) and either a larger SSD or some other hardware addition.