Our own CPAN Watch has the tag line "We watch the CPAN so you don't have to", but if you still want to, then there's a new CPAN feed in town.
search.cpan.org has the Recent Uploads page and feed, but all it shows is the distribution name and description. Daisuke Murase has created his own CPAN Recent Changes site and feed that now shows the relevant parts of the change log, back to the latest non-developer release. At least, that seems to be its intent, although its heuristic seems to not always work.
I'm glad to see the new site in place. I'm sure new additions will be coming, and maybe others will offer their own spin on what's new in CPAN, as well. It's a mutation that will lead to more evolution.