News + old news: Ruby 1.9, Ruby on Rails 2.0, NetBeans 6.0 official version

I have been busy working recently and have not continued to learn rails, but I am still paying attention to it.
At the end of the year, when we review the past year, companies and organizations in the industry have continuously launched new products, and the following items are no longer new. Old news is about Rails.

First, we saw the latest version on javaeye, which is the release of ruby 1.9.

Http://www.ruby-lang.org/en/news/2007/12/25/ruby-1-9-0-released/

Another is an important previous release, introduced on Rails 2.0 and javaeye:
New Features of Ruby on Rails 2.0

Another is the release of the official version of NetBeans 6.0, which is already the news of the beginning of this month. I tried to learn Rails with the rc version and just upgraded it.
Sun announced the official release of NetBeans IDE 6.0
:

Http://www.netbeans.org/community/releases/60/index.html