Irregularly you will find new snapshot releases. It is tempting to use such a snapshot release, as it is much easier than using the CVS version of the 'bot.
You are encouraged to test whether the bot has what you want or to study the code by downloading a snapshot. If, however, you want to use a robot on the wikipedia regularly, please use the CVS version: only by using the very latest version you can be reasonably sure that the interaction between pywikipediabot and wikimedia keeps working as it should.