50% off exspanion packs on origin but not seasons

I think the videos might be for an upcoming sale but have been released too early. The info text under the videos is weird for one thing and two near identical sale videos were uploaded at the same time. The code on the Sims Twitter page seems to be a different offer.
Speculating but looking at the thumbnail referenced in the info box

TS4_AD_GCsale_Thumb_v01_692460006745968b42ff1d567a67a2945e4866e5.jpg

GCsale might be refering to Gamescon which is in a week and a half.