No it's not, in April they both talked about a modular Mac Pro which would ship "not this year" (the iMac Pro is slated to ship in December), and they did specifically refer to this iMac Pro:
> “great” new iMacs in the pipeline, slated for release “this year”, including configurations specifically targeted at large segments of the pro market.
> “great” new iMacs in the pipeline, slated for release “this year”, including configurations specifically targeted at large segments of the pro market.
https://daringfireball.net/2017/04/the_mac_pro_lives