I can't imagine that wallpaper would hold up well on cabinets, especially with non-slab doors. Painting won't really update your cabinets since it is the arched door style that is dated, and paint won't change that.

check pinterest. Lots of ideas out there for this. One uses embossed contact paper. You'll need to find something that blends with the oak frames so maybe you could do this but paint the contact paper first. http://petitemichellelouise.blogspot.com/2014/04/diy-cabinet-door-facelift.html?m=1

It won't be terribly durable but if it's contact paper, you could replace the pieces that begin to show wear.

no to wallpaper

SW Urbane Bronze, Shoji White

Oak cabinets don’t do any refresh well. You’ve got to either leave them alone or replace them.

Lot of discussion on painting oak cabinets in this discussion

https://www.houzz.com/discussions/6021424/professionally-painted-oak-cabinets-or-new-cabinetry#n=41

No to wallpaper, thats a bit tacky, sand and paint them, replace them, or leave them like they are. I would at the very least, add some new hardwood. I dont see any cabinet pulls or knobs. That would update it quite a bit.

Nice kitchen.

The best quick update could well be a new light fixture.

Add a "no vote" to painting oak cabinets.

You could create a stainless steel niche for the stove hood with panels custom cut. A local heat/ac company that builds their own duct might be able to do that for you.

Space permitting, you could add a small rolling cart island in the same white (or your favorite lighter color).

Do not wallpaper your cabinets. Paint them, add glass fronts...