The biggest change to RubyGems is the command structure. We now follow a cvs-like command structure where gem is the main command and install, build, etc are subcommands. For example, it install the latest version of rake, use the following command:
gem install rake
Options are now defind on individual subcommands and the whole structure is much easier to learn and understand. In addition, the help system knows about individual commands and all the options for each command.
As you can guess, I’m quite excited about the latest version. I hope you download it and give it a tryout.
BTW, if you use Rake to build RubyGems, you will want to grab the latest version (rake-0.4.2) that supports rubygems-0.7.0.