Most of the discussion was centred around KobaP reminiscing about creating various games for the PlayStation, but at one point the hosts tried to coax some new information out of him. In response, he talked about how the current Butai Sengoku Basara 4 stage play was in Nagoya approaching the end of its run, then brought up next year's Basara Matsuri, inviting the hosts along and promising that it was going to be really fun. He went on to suggest that since they were holding that big event in February 2015, wouldn't you expect something there?
Before anyone could press him further, he went back to describing the cool things that happen at Basara Matsuri events and moved the conversation along.
A little later on, host Dogma Kazami was asking some general questions about KobaP's planned lineup and received the answer that something would be announced the week after next. He refused to say more on the subject other than that things will start moving along soon, and that there are a few things for next year (this line trailed off).
It's worth mentioning that the upcoming announcement could easily relate to Biohazard, Dragon's Dogma or one of the other series he works on (heck, it could even be more Gaist Crusher given how much time KobaP seems to spend promoting that series). We can probably safely assume that it's for a PlayStation platform, at least, otherwise it would be rather cruel to mention it at a PlayStation-themed event!
However, KobaP's brief Sengoku Basara stage presentation at Jump Festa is on 20th December. That qualifies as 'the week after next', right? He could have meant that he'll be announcing something there then we'll get more details at Basara Matsuri, or just that he'll be announcing more Basara Matsuri details there as they've already confirmed...