I'm reasonably sure the Bolt EUV is the "Bolt EV Incomplete." I don't think GM would use the same "meta" name for a complete different platform.
Also, the rumor for a while has been that the Buick Encore would be the small "lux" CUV based on the Bolt EV's platform. GM's announcing that they are developing a new, BEV 3 platform specifically for their Cadillac line would appear to support that theory.