Samsung has recently announced that it will no longer be supporting or supplying digital handsets, what does this mean??s true ?

Announced last year, end of sales date was Sept 2019 That means no new parts manufactured.Plenty of refurbished available.

https://sundance-communications.com...ning-out-the-lights-9-30-2019#Post631671

What do you mean ,"Guess that means the Fat Lady is warming up."

That the end is coming.And it already has.

Are they discontinuing just the handsets or the entire phones?

They discontinued all new manufacturing of phones and telephone systems. The only thing that is currently available is the secondary/refurbished stuff or whatever any distributor or dealer might have as an overstock.

This was only in the US. Other markets such as the uk are still going I believe.