There isn't an RSS feed. You may be able to get some of what you want
from a query, like `ssh -P 29418 server gerrit query status:open`.
There is a "hidden" way to run this query via the web,
http://server/query?q=status:open ... if I can remember the URL
correctly. :-)
> This information I would like to use in 2 ways.
>
> The first way is to create an Eclipse plugin that takes the patches
> information and annotates the code in Eclipse so that the dev get
> hints on what lines of code is pushed for review. Then the dev can
> proceed with caution or help in reviewing the patch given the rights
> to do so.
You should look at/talk to the Mylyn Reviews team. Mylyn is building a
connector to Gerrit Code Review. The JGit/EGit team is involved in
this effort too.