I had pretty much the same problem as the OP. Found this thread in a search of the forums, but it doesn't really end with the problem being solved, so I thought I'd add my notes about what worked for me. Maybe it'll save someone some time.
I downloaded and installed the 2GB Live8-to-Suite upgrade file. After installing, authorizing, and updating to the latest Suite version, I still didn't see any evidence of Drum Machines or Latin Percussion in my Live Devices or Library. Clicking on the Kits or Clips links under Drum Machines in the Help view set off a search of the library, which returned no results. It certainly appeared that those features were not installed by the Suite upgrade. If it matters, I'm on Mac OS X Snow Leopard ( 10.6.8 ).
I was able to get the Drum Machines and Latin Percussion kits and clips by downloading and installing the Live Packs separately from http://www.ableton.com/livepacks
. After installing the Live Packs, I had lots more kits in "Instruments/Drum Rack/Kit" and a new folder named "Instruments/Drum Rack/Latin Percussion".
Like others, I assumed that all content was included in the original Suite upgrade file I downloaded, but it looks like it's not (or if it is, it's not getting installed when you run the upgrade.) The instructions for upgrading in the email I received from Ableton only talked about downloading and installing the Suite upgrade file, there was no mention of having to download the Live Packs separately. So I'm not sure if something went wrong when installing the upgrade, or if that content is intended to be downloaded separately. Either way, it could have gone smoother.
But all's well that ends well, and I've got everything I expected working now.