People have already started receiving them and some of them are already complaining of issues. (And T-Mobile is already selling them in stores)
Nobody was forced into buying an N4 or N10 on release day. Wait a flippen couple of weeks before buying it if you have such a hangup with 3rd party apps not working for the first 3 or 4 days of the release.
Your suggested alternative, to hold shippment of product for a month? Missing black Friday and 50% of the holiday season? Not likely. Would you really want that anyway? A couple million more tablets sold (during the most important couple of weeks of the year) that aren't android based and aren't incentivizing devs to put more attention on android apps?
For a tablet, that gets updated once or twice a year, leaving the device to sit on the shelf for a month is the same as killing 10 to 20% of its lifespan. Not a smart move.
You think Google was just sitting on the release of 4.2 for the last couple of weeks because there was something magical about 11/13? They released the update to all as soon as it was ready. Asking them to do anything else is absurd.
-Suntan