So, I stumbled across Edenstyle's write ups of the Sims 4 masterclass at Gamescom yesterday.  They're quite interesting to read and give a little bit more information than the video released by EA, so I recommend you look at them.  Some things that jumped out at me:
( A bit of blather )

SO I'm sure some of you have seen this video showing the first look at the Sims 4 gameplay.:

Click to view

( Quite a few thoughts this-a way. )