From tomorrow (29th July 2020), some Freeview services are changing.
Ketchup/Yaaas (streamed service on devices connected to the internet) will be separating, becoming Ketchup on the existing channel number, and Yaaas on channel 212. This returns Ketchup and Yaaas to their original format, prior to merging as one portal.
A new channel Country Music Entertainment, will be launching on channel 98, and will be a 24/7 country music service. This channel will be on the Greater Manchester multiplex, so coverage will be restricted to the Greater Manchester area, but viewers others parts of UK with internet connected devices can access the streamed version via channel 271*. The streamed version is also in HD.
The Freeview website also states that new channel Merit is changing the way it is broadcast. The change is unclear, but this normally means the service is switching to a different multiplex.
In most cases, a partial retune or add new channels function should make the necessary adjustments for these changes to take affect on your device, but a full retune may still be required in some cases. Some devices may adjust automatically. Consult your device manufacturer if unsure.
*Update (29th July 2020): Thanks to Country Music Entertainment for letting me know about the streamed version of the channel.