The popular (and free) Pulse RSS news app just got a bump this morning to version 1.1 adding some background-updating and some Mango fast-app switching. It's also substantially less laggy now, no doubt due to the Magno-recompile.
Unfortunately, not too many other features were added as far as we can tell--still no Google Reader integration, nor ability to add custom feeds (just search). Nor are there any Live Tiles, so in that sense, the alternate Fuse app is still significantly out pacing it and may be a good choice for those who need more.
Edit: Ah yes, as some folks in comments remind us, this app has always been Mango-ized and has a uncustomizable Live Tile. So what's new? Perhaps just bug fixes and generic "performance enhancments". Enjoy! We're sticking with Fuse.
For those who like free, basic but still solid, you can pick up Pulse v1.1 here in the Marketplace.