I might be wrong but I expect the edition released to VLSC to be the same 10240 build as MSDN, etc. and that consumers now have, so the updates will be needed I am guessing. My MSDN copy did have some updates available already so that is why I am wondering if not seeing them is an environmental issue here or if no one can get them yet.

We have Windows 10 selected as a product on our CAS/parent SUP but no updates are coming in for Windows 10. Syncs are completing without any issues I can see. I know at least a few updates for Windows 10 have been releasedis this a common issue or localized to just us?

Not all updates are released to WSUS and/or they just haven't been put into the WSUS catalog yet. All updates released to this point should get automatically slipstreamed into the upgrade to Win10.

Not sure about new installs exactly though. I think the assumption is that since Windows 10 is not free for enterprises, no systems managed by WSUS should have Win10 yet. That will of course change rapidly though.