my newly created vmfs volume is only version 3.46?

Hello,  just trying to understand what is happening.  I just created a new VMFS volume on my 5.0 (build 914586) and when I look at the version in vCenter it says that its version 3.46?  When I look up versioning it states my new volume should be 5.54. None of these hosts were in-place upgraded they all are fresh builds of ESXi 5.0 914586.  how can I create a volume and ensure its 5.54 from the start?

thanks,

Don