src/kudu/consensus/consensus.txt seems out of date

I am trying to build Kudu from source and also improve it more, and running into some understanding issues. 

Here is some of the documentation in consensus.txt   

RaftConfig membership changes:

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A two-phase joint consensus protocol is used for making cluster membership changes, including changing members of the config or the size of the majority. See RAFT section 6 and figure 11 for details.         

NOTE: membership changes are not yet implemented in Kudu.  

Is this still valid that consensus does not support membership changes?

Can we update consensus.txt to reflect current reality?