checking for an update on the existing idea

If you go back to the link you posted and look in the right column, you will see a list of Idea Statuses.  Watch for the status to change on this link or any other one in the Feature Requests that interest you.  The status will change when SmartBear is looking at the idea or ready to implement it.

Right now the one you asked about says "New Idea" in the header.  Be sure and give it a Kudo if you want it to have a better chance of being implemented.