Even though there's not much details about the two, pictures and videos are available.
MSI Serene:

MSI La Mode:

The MSI La Mode netbook features a 10" screen, and seems to look similar to the MSI Wind U160 with a slightly different exterior design. It's an "ebony cloth case with wave-pattern and luminescent MSI logo" which supposedly helps to dissipate heat.
The other, the MSI Serene, will feature MSI's thermal technology for heat dissipation. Since it's won't have a fan to help cool the unit, it's going to be "serenly" silent when it's turned on.
Source: Notebook Italia