From what I can gather, with the roll out of fibre broadband to replace the copper connection, your phone will have to be changed to a VOIP (voice over Internet protocol) one.
This means the new phone will connect over the fibre connection on the Internet.
So you will still have a landline but use a different phone.
I am still on copper but ditched my landline phone as never used it.
The only time it rang it was scammers.