[El_Muerte]

For proper support please go to the vbDrupal forums. Also take note that this product is still beta. Try it on a test installation first (and, of course, make backups), specially when you are already using vbDrupal 4.7.
It only had some minor testing, mostly done by me.
Personally I wouldn't use the vbDrupal 5 series on a production server until it hits RC (=Release Candidate).
Of course, more people testing this software will most likely result in better software.
So report anything that isn't correct (including documentation errors) on the vbDrupal forums.

Originally Posted by Cyburbia

How easy is updating from vBDrupal 4.*?

Upgrading from vbDrupal 4.7 should be painless, assuming you don't have any 3rd party modules and themes. If you do, you of course, should update them to Drupal 5 versions.
Upgrading from vbDrupal 4.6 should be possible, but it's not something I've tested, it's probably best to first upgrade to the latest 4.7 release.

Originally Posted by subnet_rx

Is there supposed to be a product .xml file in the download? I may have missed it.

Starting with vbDrupal 5 there is no longer a need to manually install the product .xml, this will all be done automatically during installation/update.
But if you really need to manually (re)install the vBulletin plugins and what not, the product.xml can be found in: drupal/modules/vbcore/xml