<UPDATE: With $3,986,929 final Kickstarter fundraising and the Paypal contributions combined, the $4M goal was reached.>
With five hours left to go, Obsidian has added one final stretch goal for Project Eternity - at $4M, they'll "enhance the whole game".
According to the developer in their blog post, "OK! After much team deliberation we have one final ultimate stretch goal. At $4.0m we will be enhancing the whole game. We will use live instrumentation for the soundtrack, add developer in-game commentary, and use every dollar between $3.5m and $4m to enhance the game. Also at $4.0m Chris Avellone will be forced to play Arcanum."
Will $4M be reached? Stay tuned.