The M.Zuiko Digital 17mm 1:2.8 has OFFICIALLY discontinued.
http://four-thirds.org/en/microft/single.html#c=FINISH – This list contains lists of discontinued μ4/3 lenses, now with the 17/2.8.
http://asia.olympus-imaging.com/product/dslr/mlens/index.html#anc03 – The 17/2.8 was belonged to the M.Zuiko (standard) line-up, but disappeared.
For now the lens is still in Stock in many stores like BHphoto. It’s unclear yet if this means that Olympus will launch a new updates version soon.
Thanks to the anonymous source who sent me this!