If you have already installed 10.10.2 with the delta and the remote desktop update, you basically are not missing anything (unless you have a lexmark printer - a whole heap of new lexmark printer drivers have since been updated). EDIT: There is also a new iTunes 12.1 today too:
https://www.macrumors.com/2015/01/29/apple-release-itunes-12-notification-widget/
However, there was also a new xprotect and this never "shows up" in the mac app store. It is supposed to install automatically. Many times however it doesn't and people may in this case like to manually install it.
If you want to do this you can get it at
http://swcdn.apple.com/content/down...rj4vz9f75gyeyllgr/XProtectPlistConfigData.pkg
You can check if it has been updated by going to Finder->Go->Go To Folder. Copy this into the box:
/System/Library/CoreServices/CoreTypes.bundle/Contents/Resources/
You may have to sort by name to make the list alphabetical. Scroll to the bottom to a file called "XProtect.plist". The date it was last changed will be the last time it was modified.
If it is dated Dec 15, 2014 or before, you have the old one and it has not been updated. You may use the link above to update it. The new one is dated January 28, 2015. (or January 27 depending on your time zone).