Ars Technica has posted an article on the latest chipsets of NVIDIA  with model numbers 9300 and 9400. The article notes that the integrated graphics are significantly more powerful than NVIDIA has ever made for integrated graphics.

The 9400 is the model that is included in the new Macbook Pros that was launched yesterday. This model is similar to the 8300 chipset. The two difference are:
1. It is an Intel chipset.
2. It supports 1333 MHz bus speeds.

One of the new features of these NVIDIA chipsets is the DisplayPort support.

The article includes a few screen shots which shows technical information about the products.

Source: Ars Technica