Masayoshi Yokoyama said through a personal tweet that "Like a Dragon Pole 3" is just a mistake. However, the "Dragon Pole 3" in the original picture remains the same.

The development team of Dragon Online today published a new log on the game's official website, introducing the game's activity schedule for the next period of time. It is worth noting that the words "Like Dragon Pole 3" appear in it.
As you can see from the two pictures below, Dragon Online will open the commemoration of "Dragon Pole 2" in mid-September and the commemoration of "Dragon Pole 3" in late October, which means that the latter should not be a mistake in writing the wrong number. Considering that late September is the time for the TGS Online Show, It is likely that Dragon Pole 3 will be released during this period.
The TGS livestream will take place from September 24th to September 27th, and it won't be long before we know what's new.