You can check for the update by simply going into the Store client on your Symbian^3/Anna/Belle device - all models will see the update. It's a 5MB update and takes a couple of minutes to install.
Looking in the Collections section on this (newly reset) Nokia E6 does show the 'Nokia Store Gift' collection, but its contents are as they were before the upgrade and there's nothing remarkable.... yet.
So, upgrade away, let us know if you spot any changes in the Store client performance and, most of all in the coming days, if you spot any additions to the 'Gift' collection. Oooh, it's like waiting for Christmas, isn't it?