Just a quick blog post for those of you who might have missed it and are still running VMware vSphere 5.5 that it will be end of general support September 19, 2018. vSphere 5.5 was released September 22, 2013 so it has been around for almost 5 years when the general support ends. The same end of general support applies to vSAN™ 5.5 as well.
If required, there is an extended support option on a per year basis for an additional two years meaning September 19, 2020. Read more about that option via VMware Extended Support This technical guidance is primarily through the self-help porta and good to know is that VMware will not provide patches and bug fixes unless really required.
Check VMware Lifecycle Product Matrix for additional lifecycle information.