Question: In some languages "new" could be used both as a noun or as an adjective. I read that in English, "new" is only an adjective. Is it true? When I say: "a new", is it wrong? How else can I properly say something along the lines "a new"?

In other words, is it ok to say: "a new is being created"? If not, how to say it properly?

Edit:

Example - hmm, I cannot really think of one. Maybe: "a miracle is when a new comes to life out of nothing". I try to *name* the result of a creation.

The problem is, in my native language there is no distinction between "new" as a noun and "new" as an adjective. "Newness" is, if I understand correctly, the general quality of "a new" or of "something new", hence it is a bit different from what I'm looking for.

"The new" is almost perfect - but I'm not sure if I can use "the" as this is the first time I talk about that "new".

Answer: 
In Italian you have the expression: "**C'è una novità**" which translated literally is *"There is a new thing."* 

The noun, novità, in Italian does much more than by saying *a new*. It could be saying one of several things for example, there is some **latest news** I have to tell you, or "Is **anything new** happening in your life?" It might be announcing that **new products or items** have been issued or released in the market. So context is king in these cases, and unfortunately, the OP did not specify any situation for this noun *"new"*, only in the sense that from a *new being*, a miracle has been created. 

> 
> "a miracle is when a new comes to life out of nothing"
> 
> 
> 

Hence, in English, if we were talking about a scientific *discovery* or new studies in medicine we might say: 

> 
> A **new breakthrough** in science/medicine has been made in the fight against
>  etc...
> 
> 
> 

If we were talking about *new* electronic devices or technological advances we might say:

> 
> Numerous **innovations** in the field of telecommunications have been etc... 
> 
> 
> The **cutting edge** of computer technology that promises to etc..
> 
> 
> 

On a final note the expressions: *breakthrough*, *innovation* and *cutting edge* are all nouns, which proves that the English language does indeed have nouns meaning *newness*.
> 
> Has the "new" worn off yet?
> 
> 
> 

Seems to meet the criteria in a different way with a common figure of speech.