Rough plumbing and electrical done. Drywall is started. Drywall on ceilings is done.
The reason for the beadboard ceiling in the kitchen is because the ceiling joists were 2×6’s. These joists make the floor for the upstairs. Any drywall would have cracked under the amount of movement these joists would allow. The beadboard will be trimmed out with 1×4’s and will allow the ceiling to have some flex.