There is a button to sort alphabetically, check the “Options” to Sort Inventory: by Name (Personally I think he should also just combine sorting by oldest & newest, to sorting by “age”, since both do basically the same thing). You can also sort by weight or by group-type.
Container Management is definitely something he said is coming very soon, allowing us to pick and choose what to take out of containers as well as using containers in inventory to keep that better organized. So you can carry a bag to keep food in, one to keep tools, archery items, etc. Possibly item stacking as well.