Brent Simmons: “It’s a complete rewrite of the code base, which had last been re-architected in 2004/2005. It was overdue, and it’s taken about a year to do. The iPhone and iPad versions will soon use this code base too — and there will be a full, for-pay version of NetNewsWire 4.0 for Macintosh too. (The full version will have more of the features you’re used to: syncing, searching, starred items, AppleScript support, and so on.)”
It’s available in the Apple Mac Store. Give it a gander.
Brent is a great developer and isn’t afraid to “turn the soil.” It seems like he’s constantly looking for ways to improve his baby and isn’t afraid to completely rewrite stuff.