As it always happens, Build 10512 has been followed by many apps updates. As you can see in the above screenshot below apps or apps families are updated.
Office preview apps
Block & Filter
It is not yet clear what all has changed but it may be some fixes and improvements. Do let us know if you notice changes.
Apart from above apps even the Groove Music has seen an update and now we see OneDrive songs synced to the app in case your region and account belong to Xbox supported market.