Following the similar rollouts that went out in the last 24 hours for Sprint's and Verizon's versions of the Galaxy S5 in the US, Samsung is now busy pushing out an update to those units purchased from Europe. The update is now rolling out over-the-air in several countries across the continent, coming in as a 53MB download. It will add the usual unnamed bug fixes and performance improvements, but also the security update for January. This was readied by Samsung and Google at the start of the month, as you may recall. If you have a Galaxy S5 that's unbranded and was bought unlocked, then...
Source: http://www.gsmarena.com/samsung_galaxy_s5_in_europe_is_now_receiving_the_january_security_update-news-23095.php