There were some difficulties last spring, which unfortunately led to some good people leaving Catalyst, but they also led to many improvements in the back-office operations of Catalyst. We've kept pushing forward all year, and we have plans to move forward for a good long while. Now, I'm not making any guarantees here--nothing in any business is guaranteed. But given that Catalyst management keeps pumping me for long-term plans and supporting me when I develop plans for a release schedule stretching more than a year into the future, I believe the company is not going away in the next few months.
Speaking of plans for the next year, there currently are no plans to release a 5th edition of SR in 2011. Which is good, because I've got plenty of other books to work on.
Jason H.