A dawn usually marks the start of something new, while rise is more broad term of ascension.
Dawn of Skywalker – this variation of the title has a nice ring to it.
If we’re really looking into this, the Japanese title points less to Luke rising from the dead, and more toward him passing on the lightsaber to a new generation.
Now, the differences between the two titles are minor but there is a bit of a different connotation that “dawn” gives as opposed to “rise”.