The post goes on to note that you can always export your Google Reader subscriptions etc., if you aren’t inclined to use Google+ (i.e., don’t bother sending feedback indicating you’d prefer to continue using Google Reader as it is today)
In the next week, we’ll be making some highly requested changes to Google Reader. First, we’re going to introduce a brand new design (like many of Google’s other products) that we hope you love. Second, we’re going to bring Reader and Google+ closer together, so you can share the best of your feeds with just the right circles.
As a result of these changes, we also think it's important to clean things up a bit. Many of Reader's social features will soon be available via Google+, so in a week's time we'll be retiring things like friending, following and shared link blogs inside of Reader.