Secondly, and this isn't new (as far as I know), there is a RSS feed for Labs. You can find the different flavors here:
One problem though - it seems to be a bit behind. Can someone at Adobe possibly look into this?
Edited: By the way, don't forget that you can use RSSWatcher to monitor RSS feeds. I just added a profile for the Labs RSS feeds so I will get an email when it is updated.