Apple has also introduced the lightning connector to the iPad 4, which surprisingly hasn't contributed to a thinner and lighter design, similar to what we saw with the Apple iPhone 5. The new iPad also has faster Wi-Fi connectivity and enhanced LTE connectivity which allows the iPad 4 to be a used globally on various LTE bands.
The pricing will remain the same as the previous generation and will cost $499 for the 16GB and $629 for the 16GB with data connectivity. Each storage variant (32GB, 64GB) will cost an additional $100 depending on your choice.
The iPad 4 will be available in the US through Verizon, AT&T and Sprint and can be purchased in either Black or White.
source – Apple