Dear ,
When I want to update yad to newer version give this message is it normal? для удаления - ( will remove , delete)

I do not know, but I am pretty sure I would keep using the old yad a while longer, until"someone" makes those apps work with the new yad?

Surely that's just telling you to add the key for the antix repo? Yad is on DaveServer so you need his key.