To those of you who can’t read Japanese, that says:
“The requests of many was DLC is currently under production . Please look forward to follow-up. In addition, it is expected to deliver an update 1.04 to 5/25″
To those of you who can’t read Google Translate, we can expect a new update within a week, and the new DLC content is being worked on. Given that Sony won’t be exhibiting at Gamescom, it’s most likely we’ll see something relating to this at E3 2015.