The new smallest entry-level DSLR camera Canon EOS Rebel SL2 is rumored to be announced in this July, 2017. Currently unknown if this camera will be announced along with EOS 6D Mark II. Canon will start shipping EOS Rebel SL2 in late August to early September, 2017.
As rumored several days ago, Rebel SL2 will be a bit more lighter and smaller than current Rebel SL1. Other specs is not available yet.