I'm really curious about this. Here's the list of available Salesforce API versions for a given Apex Class:

• 29.0
• 28.0
• 27.0
• 26.0
• 25.0
• 24.0
• 23.0
• 22.0
• 21.0
• 20.0
• 19.0
• 18.0
• 17.0
• 16.0
• 15.0
• 14.0
• 13.0
• 12.0
• 11.1 <-- what happened here?!
• 11.0
• 10.0

Is there anyone here on the inside, who can share the fireside backstory behind 11.1?

Attribution to: bigassforce

Possible Suggestion/Solution #1

That's going back a while now. API v11.1 was released to support the first release of the identity confirmation features, including the API security token, login confirmation codes for new browsers and other related features. This set of features was released outside of the regular major release and included some API behavior that needed versioning, hence the point release.

Attribution to: superfell
This content is remixed from stackoverflow or stackexchange. Please visit https://salesforce.stackexchange.com/questions/30299