The software update option in the SpyderCHECKR software (accessible in Preferences) is on by default. When Datacolor posts a new build of the software you will be notified on your next launch of the software. You will be prompted to download the newest software from the Datacolor website. Subscribing to the Datacolor newsletter will also keep you informed of software updates.
Here is the link to subscribe: http://spyder.datacolor.com/news/newsletter-subscribe/