Jaleco hasn't left the game industry following its buyout by Game Yarou. In fact, it's going to be business as usual at the Jaleco offices, with the only difference being that hopefully there will be some business.
Gamasutra reports that under Game Yarou's ownership, Jaleco Limited will continue normal operation, and "operate its Tokyo office independently of Game Yarou." The Wii action RPG Ougon no Kizuna (official site here) is still in production and scheduled for a May 28 release in Japan.
Since the press release announcing the buyout specifically mentioned reasons why Jaleco was leaving the game industry, we suspect that this was more a change in plans than a simple miscommunication.