General:
* Title reveal: This is a neutral term that simply describes the act of the title being revealed.
* Title introduction: Similar to "title reveal," this emphasizes the act of presenting the title to the audience.
* Title placement: This focuses on where the title appears within the work, emphasizing its positioning.
More specific:
* Epigraph: If the title appears as a quote at the beginning of the work, it can be considered an epigraph.
* Opening line: If the title is the first line of the work, it is simply the opening line.
* First mention: This is a more general term that simply indicates when the title is mentioned for the first time.
For a more precise description, you can consider using a phrase like:
* The title is first mentioned in the opening paragraph.
* The title is prominently displayed on the first page.
* The title is revealed in a dramatic way at the end of the prologue.
Ultimately, the best term or phrase will depend on the specific work and the context in which you are discussing it.