I don't think so. Oda has focused mainly on his signature works and there haven't been reports of any additional manga from him. Maybe in the future, but as of now, it seems he's dedicated to the existing ones.
"The Descent of the Devil's Fruit: The World of the First Pirates" is a sci-fi futuristic novel written by the author Zhao Sin. The general plot of this novel is as follows:
As the demonic fruit descended on the blue planet, Oda admitted that he had the power of the fruit of prophecy. On the other hand, One Piece was merely an adaptation of the scenes that he had predicted. In the manga, the demon fruit tree had already begun to wither, and the world of pirates was nearing its end. You couldn't imagine how many Devil Fruits had been drowned by the tide of history. You wouldn't be able to guess how terrifying the world of the first generation pirates was. The owner of the Money Fruit was a cheater. I'll let you know what it means to do whatever you want with money. The owner of the Gambling Fruit was known as the strongest. No one in the world was willing to offend him because he dared to bet his life with you. The Time Fruit and the Space Fruit were weak in front of the owner of the Reincarnation Fruit. However, he could only leave in regret. Before he left, he left these words. "I might not be as good as you in this era, but I will still exist in the next era." Guess who wrote the Demon Fruit Atlas, and guess what kind of fruit the protagonist needs to compete in this world. How did the Heavenly Dragon people get their title? What's the strongest weapon you've ever seen? Supreme Swift Blade? If you use the fruit juice of the devil fruit as a quenching agent, guess what will happen. Welcome to the world of the first generation of pirates. Here is the answer you want.
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One Piece: Caesar was a light novel written by the author, Under the Falling Light. The general plot of the novel was:
His soul transmigrated to the pirate world and became Caesar Kurang. The future timeline that the protagonist could know was until Luffy completely defeated "Hundred Beasts" Kaido. A dual fruit aptitude user, transforming into a giant dragon. [Momosuke must die. Keyword: One Piece, Caesar, Dragon, Twin Fruits, Hegemony, Decisive Killing, Ambitionist.]
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One Piece: Fruit of the Sea Tower was a light novel by the author, Xiao Zhuan. It was a doujinshi novel. The general plot of this novel was:
Pirates and co-conspirators. He ate a fake devil fruit, and it was sweet. Obtained the attributes of the Hailoushi fruit and became the father of all fruit ability users. All aptitude users would turn soft at the touch and immediately cower ~ Moreover, he owned a demon fruit orchard and became a farm owner. There are only 720 demon fruits in the world, and all of them come from the demon tree. Now that the tree belongs to my family, do you think these fruits belong to me? Those who ate my fruits will have to pay back sooner or later. He was so handsome that he didn't look like someone who was capable at all!
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The Cultivation Journey in One Piece World was a light novel by the author, Yan Chengxiao. The general plot of the novel was:
[I have the ability to split fruits!]
[I have the Poison Fruit ability!]
[I have the ability of the Undying Bird Fruit!]
…
[Protagonist: This is nothing. I can cultivate!]
****:?
[We are all domineering!]
Protagonist: I can cultivate!
****:?
This book may have a big difference from the original setting of One Piece, please forgive me...
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One Piece: I'm a Big Boss was a light novel by the author, If We Don't Cherish Each Other After Parting. It was a derivative doujinshi novel. The general plot of the novel was as follows:
Reincarnated as the West Ocean mafia in the world of One Piece. Seize the opportunity to eat the special superhuman demon fruit, the Demon's Eye, and embark on the path of a world boss!
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The Soul Fruit of One Piece was a light novel by the author, Shuang Rufeng. The general plot of the novel was:
A young man from Earth who had transmigrated to the era of Locks and became a Soul Fruit user. He used Earth's fantasy ideas to let Naruto's other gods and Death's Ethereal Mirage roam the pirate world, becoming a Soul King of his generation. [New book: The Flying Journey of the Awakened Shadow Fruit. Friends who like to see the development of the Shadow Fruit can collect it and take a look!]
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"The Golden Fruit of the Demon's Tail" was a light novel written by the author, Farmer One Punch. It was a derivative doujinshi novel. The general plot of this novel was:
This was a story in the pirate world. After eating the Golden Devil Fruit, the superhuman Golden Fruit, he transmigrated to the tail of the demon, established an empire, and became king. What kind of sparks would there be between the devil fruit and magic? The source of all pain was despair, and it was difficult to save him! -------------- [Note: The main character will not learn magic. He only has the ability of the Devil's Fruit, Tricolor Domination, and Six Forms.] [PS: One Piece: A World-weary Song, One Piece's Explosive Art, One Piece's Silver Fox General have been completed. Please take care of me.] [New book: Hunting the protagonist from the pirates. New book: The arrogant and high-profile history of the richest pirate.]
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One Piece's Fruit of Plants was a light novel written by the author, Li Ermeng. The general plot of the novel was:
Reborn in the era of the great pirates, master the ability of plant fruits. He called Luffy his brother, compared notes with Sauron, tasted Sanji cuisine, and teased Usopp. Competing with the Seven Martial Seas, sparring with the Four Emperors, and discussing justice with the World Government. Within the four seas, I can roam freely in the great sea route. In a new era, a great hero would stand tall in the eyes of everyone.
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One Piece: The Sea of Justice was a light novel written by Zhuan Zhu Siliao. The general plot of the novel was:
[The highest purpose of this work is that Oda is a manga artist. He doesn't know anything about Hammer One Piece.]
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One Piece: The Purgatory Hound was a light novel by the author, Sorrowful Guoguo. The general plot of the novel was as follows:
An ordinary jackal fruit was mixed with three different souls. There was a modern office worker, a dreamy youth who wandered in the desert, and a desert god who killed and summoned in the canyon.
In the end, they? Him? Where would he go?