One of our partners asked me yesterday about my thoughts on upgrading. Whether recommends upgrading to 6.4 as of now or not. Also, just stumbled upon this great discussion !
here on Kim Hornung’s blog
This is quite an interesting and thought provoking question, and I don’t think there could be a single answer to that and I also think that Sitecore has been doing a great job not forcing customer’s to upgrade. At the end of the day, it is your customer’s requirements and expectations that should drive the decision. With Sitecore’s successful hotfix process, if you have an issue that is a showstopper, you can request a quick hotfix from the Customer Service rather than upgrading your whole infrastructure!
Click on the image to expand.
Please note that this is not an official recommendation from Sitecore. Rather, these are my personal thoughts on the subject.
With 6.3.1 being recommended, I’ve updated the image.