Nokia 5.1 started receiving the January security update from Google. The Reddit user Wolfvector shared the screenshot of his 5.1 where you can see that the January update for that model is peculiarly big, 1268.8 MB. What happened with good old security patches that were barely 100 MB large. Another Redditor (tiikerikani) said that the update for Dual SIM/NFC model TA-1075 was just 89.5MB large.
Anyway, we don’t have Noki a5.1 with us, but if you do, check if the update is available and ping us :).