Thanks for your interest. I'm finishing off another title at the moment so I don't have a specific ETA. 

To be honest, while there are some new features in C8, they are not "core" features but "accessories". The true core improvements have been 64 bit processing but that's a transparent improvement. 

The C7 tutorial is still extremely valid for C8. I've actually recommended to VTC to do what's called a "QucikStart" which covers basics plus new features. This is because C7 and C8 at the core level are identical. If they approve that, it will be a shorter series.

So if you are looking for an in-depth look at Carrara, both the C6 and C7 options are good. If you elect to use the online subscription and have a little time, you can go through both for a lot less then buying the actual DVDs. Just a thought. 

Mark