Preparing an IEEE conference accepted manuscript for arxiving
Here the relevant bits of a correspondence with copyrights@ieee.org.

Question:


  I am having trouble understanding the policies on what exact
  information needs to be included in an accepted manuscript before
  posting it to arxiv.
  
  Given an accepted manuscript at an IEEE conference, am I right in
  assuming that I need to include the following?
  (a) the full reference of the published version,
  (b) the doi linking to ieeeXplore,
  (c) the copyright notice as shown in 8.1.9.B, http://www.ieee.org/publications_standards/publications/rights/rights_policies.html
  
  If yes, is there a standard procedure how to include those in a
  standard IEEEtran tex or does one just add them in any way convenient?
  If no, could you please clarify?
  
  Note, however, that the accepted manuscript of a conference paper
  sometimes already contains a copyright notice of the following form
  "123-1-1234-5678-0/12/$31.00 c 2015 IEEE" i.e. the accepted
  manuscript, the version finally sent to ieee for publication and prior
  to copyediting etc already contains a copyright notice that is
  different from the one mentioned above. Would this one need to be
  replaced by the other one or which exact notice would need to be
  included?


Response:


  Sorry for the delay in response. To the best of my knowledge there is
  no standard format to provide the information. You would need to
  provide the copyright notice as shown in 8.1.9.B from the PSPB
  Operations Manual:
  
  “© © 20xx IEEE. Personal use of this material is permitted. Permission
  from IEEE must be obtained for all other uses, in any current or
  future media, including reprinting/republishing this material for
  advertising or promotional purposes, creating new collective works,
  for resale or redistribution to servers or lists, or reuse of any
  copyrighted component of this work in other works.”


Not sure this really clarifies the situation..?