If needed, you can check for updates in the usual way, by going into the Store application and using '...'/Settings/Check for updates. You'll see updates found by a little blue notification at the top right of the screen. Most people, of course, will have updates set to be grabbed automatically, in which case (ahem) this story is somewhat redundant...!
'MSN Weather' and 'MSN Food & Drink', two of the platform applications updated today....
Of course, you may well have all the MSN applications installed on your Lumia by default - it does depend on your device (i.e. how new it is!) and whether it's a network variant and which country you're in. Just in case, here are helpful download links: