According to the latest news from Nokishit-Camera, the upcoming Canon EOS R5 has just passed Bluetooth Certification.

code names:

Canon “DS126831 / 36/37/38/39/40” also passed Bluetooth certification. Probably all “EOS R5” (36 is North American version [1-11,36-64,149-165ch], 38 is Taiwan etc. version [1-11,36-165ch], 39 is Chinese version [1-13,36-64,149] -165ch]. There should be a Japanese version [1-13,36-140ch] and a 1-13,36-165ch compatible version)

Canon EOS R5 is already listed at B&H/ Adorama, but due to the new coronavirus 2019 it will not start shipping until July at the earliest.