Click on the 2015 release in the upper right corner and it will change to Build number.
I just upgraded and my build number is 1018573
Help > System Info
But what does build number tell me? I'm after version...
System info tells me - Lightroom version: CC 2015.0.1 [ 1018573 ]
Where do i find version 6 or 6.01?
It looks like you are using .01 but are licensed as a CC (or trial) user - so CC rather than 6. That's shown in the second line of System Info.
Version 6 is a standalone, purchased version. As John said, you are using CC not 6. The CC version is a subscription.
You are up to date on the latest possible version of Lightroom CC.
This is beginning to make some sense, thank you.
At the top of the LR forum i see - Lightroom CC 2015.0.1/Lightroom 6.0.1 update now available
I am subscribed. Seems 6 is equivalentto CC. And 2015.0.1 is 6.01.
A little complicated isn't it. I think we've gotten to the bottom of it.
I think it would help though when various announcements are made (I think I first saw Victoria Bs announcement regarding 6.01, but she and others have not mentioned that 6.01 may mean 2015.0.1 if you are CC)