[hybi] web socket protocol in "last call"?

[Julian Reschke <julian.reschke at gmx.de>]

Citing <http://blog.whatwg.org/html5-at-last-call>:

"There's also a version of the spec called Web Applications 1.0 (for 
nostalgic reasons) that has all of the above as well as a number of 
other specs, namely Web Storage, Web Database, Server-sent Events, and 
the Web Sockets API and protocol, all together in one document. With the 
exception of the Web Database spec, they're all now in last call at the 
WHATWG."

Ian, could you please explain what you mean by "last call" in this context?

BR, Julian