A while ago, I had cleaned up all the database of symfony related blog feeds from the old symfony website, as well as added a few of my own. The whole thing is published as a single RSS feed.
Now the same is available as a Twitter account to keep you informed of all goodness in the symfony world. Just follow @sf_bloggers on Twitter.
And just like before, if you want to add your own blog feed in the mix, send a PR on khepin/symfonybloggers adding your Atom or RSS feed to the feed_list.