Yes you are reading it correctly. Today I was verifying links I added to a document. Both links referred to an MSCS based vCenter Server.
Although not everyone will have an environment where a Clustered vCenter Server is a must there are many where availability of vCenter is critical. To those who vCenter Server running clustered please note the following extract of a newly published KB article:
vCenter Server 4.x has not been qualified with third party clustering products such as Microsoft Clustering Service and Veritas Cluster Services. VMware does not support third party clustering products.
This means that as mentioned in the KB article the only supported method to increase resilience of the vCenter Service currently is VMware Heartbeat.