Poros after the snowdown update.

During the snowdown update I noticed that Riot changed the poro texture, on howling abyss, to something simpler and whiter, as apposed to be gritty with darker furrows on the horns. Has anyone else noticed this because I can't find anyone reference, at all, to them changing it. Also, the poros on Orinna's new winter skin seem to use the old textures. Some clarity or reference on this subject would help me out quite a bit. Thanks.