The Nexus 7  is a killer 7-inch tablet that gained the world’s attention earlier this year by having a low price tag but still being a top-quality tablet. Google  has now refreshed the Nexus 7, maybe in answer to the competition (namely Kindle Fire HD  and iPad Mini ) or maybe because Google had it planned all along.
The “new” Nexus 7 is more or less the same as before except now the 16GB version costs $199 while a new 32GB version is available for $249. (Previously the 8GB version was $199 while the 16GB version was $249.) There is also a new 3G [HSPA+] + WiFi version (32GB) that costs $299.
The 16GB and 32GB versions of the Nexus 7 are available now while the 3G + WiFi version will be available starting November 13.
Nexus 7 homepage