No. It is a different post, on a different research, by different people (on the same topic).

I consider the earlier result is of much worse quality. (Saw it, but I was hardly impressed.)

Interestingly, this paper cites that previous submission:

"2. Dahl, R.: Automatic colorization. In: http://tinyclouds.org/colorize/. (2016)"

They even included it in their comparisons (Table 1; Figure 5).