Overnight, several of the MSN-branded apps for Windows Phone captured an update. I noticed it morning and started digging through the details to see if new features were added. Generally, though, when a bunch of updates comes through without any major feature announcements, you can expect them to be simple bug fixes.
Other than minor fixes and improvements, there's not much here. But, whenever an update is available you should probably install it, or allow it to install if you have the Store app configured to automatically update apps.
The MSN apps included in the mass update are: Weather, News, Health & Fitness, Travel, Sports, and Money.
One particular fix that should please most is in the Weather app. After a period of time, the Live Tile would stop working. That issue is fixed in this update.
Also of note, and not a specific MSN-branded app, the Video app also received minor fixes and improvements.
Don't have the apps already? Here's the links to the Windows Phone store: