So we feel your pain, original Kindle owners, after Amazon announced a major firmware update that brings native PDF support to the 6-inch Kindle 2 and DX readers with the promise of a staggering 85% increase in battery life to all Kindle 2 devices -- if you haven't already received it OTA, the 2.3 software update is now available for download and installation via USB tethering.
The PTV3000 also supports Intel's WiDi standard, and actually brought Miracast support in an earlier beta firmware upgrade, though testers saw significant bugginess at the time.
At least owners of "some earlier versions of Kindle" (quote from the press release) will receive native PDF support whenever the 1st generation firmware update (currently at version 1.2) is released.