Multiple Sources, see below.
An advertisement has appeared in this week's Weekly Jump
for Toriyama's one-shot Manga that is scheduled to appear in the June issue of Monthly Jump (see New Manga from Akira Toriyama
). The ad now gives us the name of the One-shot; "Neko Majin Z"
However, more interesting than the 22 page Manga's name is the fact that it is going to a parody of Toriyama's own Dragon Ball
. Yes, Akira Toriyama
will be parodying his own work.
An image of the Manga can be found here
Original Source: Toriyama World
Additional Details & Image: Planet Namek
Referrers: UMJAMS Anime News
, Finch Familly (Via e-mail)