The same thing happened to me. I only downloaded the first file (17x MB) and then tried to join a match but couldn't. I remembered I had cancelled out the "rent a server" update (1GB) so I went to the store to download the update.
When it was done, I was able to join a match and see the new features.
Question: This training mode someone mentioned a day or two ago, how do I get that?
Not really training mode, but supposedly you can join empty servers and mess around in them. Before, you were locked in place when in an empty server, until the player count reached 8 or more.