With ColdFusion Builder 3 we have implemented automatic updates feature to be in-line with Eclipse update mechanism.
In case of ColdFusion Builder 3 standalone installation:-
With this, if there is any update to ColdFusion Builder 3, you will receive a notification at the bottom right corner of Builder. You can click on that and install the updates.
With this mechanism only the changed plugins are pulled and installed on top of your Builder installation.
And this is always a cumulative update .i.e Latest update contains all the previous updates as well.
If you have just closed the notification without installing the update you can install by clicking on Help --> Check for Updates label.
In case of Plugin installation to Eclipse:-
Since the Eclipse is your own copy, you have to do a one-time setup to get notifications and install it.
Open "Window -> Preferences -> Install/Update" and configure the updater options as follows.
Click on "Automatic Updates" -> Select "Automatically find updates and notify me"
Click on "Enable Software Sites" -> Enable the site http://download.adobe.com/pub/adobe/coldfusion/cfb3pluginsrepo/ . This site is already listed. You just have to enable it.
Refer to the enclosed figures for these settings.
Once this is done on every next restart of Eclipse, updates availability is checked and notified at the bottom right corner.
By clicking on that notification message you can you can install the update.
Fig 1:Notification settings
Fig 2: Update Site Sttings