This is often a problem with new firmware releases from any manufacturer. For example, when HTC released the Desire 2.2 update, it took a day or two for the Market to work properly and display all apps.
Yes it's available. I don't use it myself but I'm running the official 2.2 and I've just checked on the market. I've just downloaded it and it fires up, I don't have log-in details so can't go any further. Hope that helps