Columbus’ NBC affiliate, and former NBC O&O, WCMH-TV is prepping for its post-Memorial Day launch of “NBC 4 On the Square.”

This new HD studio, located in downtown Columbus, will play host to the station’s morning, noon and new hour-long 4 p.m. newscast. The station is sliding “Ellen” to 3 p.m. to accommodate the new show.

The station has been promoting the new studio heavily and has a special section of its Web site devoted to the debut. Interestingly, the station still lists Andy Dominiani as morning co-anchor despite the fact he was laid off this week in the wake of the first of several staff reduction moves at Media General, the station’s owner.

The new set is designed by FX Group, who also designed the station’s studio set, which debuted in HD earlier this year. Watch NewscastStudio Tuesday for a look inside the new digs.

FX Group has announced a new “green set” option, which includes sets constructed from a variety of green materials. The firm has also started an in-house recycling program and other ways to be more environmentally-friendly.

For details, click here.

Los Angeles O&O KNBC-TV has debuted a new set from FX Group.

Click here to visit FX’s site for more renderings.

KATU-TV unveiled a new set just in time for the first day of sweeps. The set, designed by FX Group, includes multiple large-format video screens and presentation areas.

Here’s a video tour of the new set:

And, in case you’re interested, here’s a look at the station’s old set: