This is the same low, or the same complex if one prefers. And IFS has output only every 24h. I don't have the exact evolution of SLP at end but this model is forecasting SLP lower than 980 hPa over central Arctic (GFS is at 978 hPa at 75h, a forecast time not available over internet for IFS to my knowledge). And it is not only about the minimum SLP but also about gradient, with a strong ridge on the Atlantic side, and multiple low centres interacting together. And it is also about Beaufort, as it is likely that the vertical stability of the Ocean column is weaker than in 2012. By the way, GFS, after a good fight up to this morning, has surender, so again it is way more likely that the models are under estimating this thing. Attached is the forecast 980hPa cyclone in 2019, and the 2012 GAC at 980hPa. We are not yet to the point where we can compare this low to the 2012 GAC, but this is going to be really, really bad for Beaufort sea and more generally for Arctic. Hope the best, but be ready. At 72h-96h lead time there is still time for loosing hPa.