Well, to be exact, the changelog for ClanTools is back. But that only happened for a good reason: about 2 years after the then-final release of ClanTools 2.0.4, new versions for IRCScore, NTPAlarm, PUTimer, and SFind are in development.
As announced earlier, IRCScore has received the most work so far, and is already quite usable, with all benefits that the switch to the .NET Framework brings with it. All tools are under heavy development at the moment, you can expect some of the tools to be released seperately in an alpha test.