I'm all for improvements to what's coming out on Dragon and Dungeon, but where is WotC conveying a message that PHB1 is an incomplete product?
If the argument is that such message is between the lines as product after product is churned out, then I would argue this message is by no means 4e-specific. If this message is elsewhere, I'll fully admit to missing it if you can point it out to me.
To be honest, this message feels like it comes more from fans than from WotC. The folks that considered PHB1 incomplete due to the lack of Barbarian, Monk, Sorcerer, Bard, Gnome, and Half-orc come to mind. And I'm not commenting on whether there is a worthy debate there or not, merely that the concept that the core book is cripplingly limited seems to be a result of customer expectation and not corporate messaging.