Give it a new paint job on the walls and some new lights, a hood instead of an OTR, and call it good. Leave the rest alone. Oak is making a comeback.

I think Sophie is right. The cabs, counter and floor all coordinate nicely. The wall colour - not so much. I'd try a greenish grey on the walls. Once you've chosen wall colour you can look at backsplash. Will you be removing the short splash that's there now? New cabinet hardware would also update things a lot.

I agree with Sophie too - and I also have an oak kitchen:)

Your countertop has the 4" backsplash and it looks like it is built into the countertop so cannot be removed. A tile backsplash on top of a 4" backsplash does not look the best, especially with wood cabinets.

The best backsplash with wood cabinets is a simple one - one that is subtle and lets the eye rest as the cabinets (because of the grain) and the countertops both have movement. There is nothing wrong with a painted backsplash area - that is so much better than the busy glass mosaics which some people mistakenly install in wood kitchens in an attempt to "update" - often gets ripped out a few months later after causing optically induced headaches.

I like the cabinets and the floor. I'd get a new counter top and paint the walls.