KOTA uses WSI MAX, yes.
Understand, weather graphics often ship from the group's design hub and they will "install" the right assets for the weather system a station uses, either WSI MAX or Baron Lynx, sometimes both. Once the assets are installed on the weather computers, while there will likely be some pre-made templates, it's up to the meteorologists to customize each individual graphic.
For news graphics, though, each station needs to make sure its hardware is compatible, groups may make the decision to deprecate certain hardware configurations so that it's easier for their remote technicians to diagnose a problem. Depending on the station, they will likely have to wait until they invest in new hardware and will launch new graphics when they're ready.
For each station, it's up to management to decide whether they want to wait to launch weather graphics with the new news graphics, or just go ahead and launch weather graphics when they're ready.