The drive managed to get its three playable kingdoms stretch goal at $600K, and the $750K goal adds Dwarves as one of the playable races. (However, the Dwarves will be added post-launch.) The most intriguing stretch goal at $1M was a persistent world with players connected online; this may be something added after release as well.
The developer posted in the "As I'm typing this we're closing in on just 6 hours left on our Kickstarter. Yesterday was actually our strongest day of the entire campaign, and that coupled with another great day today has catapulted us across the $750,000 line (when factoring in our $44,000 of PayPal pledges) and the Dwarven playable race stretch goal! You guys are amazing."
You guys are amazing."
Stonehearth is expected to be released around September 2014, with beta testing starting December 2013.
<UPDATE: With Paypal contributions, the funding reached $800K.>