Thats right, Android 2.2 (Froyo) is now available for Samsung Vibrant's on Virgin Mobile, Bell, and SaskTel networks. The update is available OTA but to complete it you will need to follow the instructions on Samsung's site.
So, T-Mobile, what's the hold up? I am hoping for an OTA myself very soon. Until then, Samsung has said they are working very hard on Captivate and Fascinate updates also.
Did you get an update? Tell us how it went and how it runs in the comments below.