Microsoft has updated several major apps, such as, photos, bing, mail, news.
To install the updates:
WIN | left-click on the STORE tile |
top-right will show Updates(6) (the number indicates the number of updates available) |
click on Updates(6) | click INSTALL in the resulting APP BAR | updates will be installed.
Even the Update procedure is buggy. You may only be able to update one or two apps. Don't worry. Restart and try again. Sooner or later, WIN 8 will let you install the remaining updates.