dovecot - Nov 2014 - Sieve counterpart of IMAP SPECIAL-USE

Hi,

It would be useful to allow Sieve scripts to "fileinto" based on 
SPECIAL-USE flags.

But all I've been able to find about it is this:

http://www.ietf.org/mail-archive/web/sieve/current/msg05171.html

Has there been any progress since?

/Peter