Pentax has issued a firmware update for the K-7.  The new firmware version 1.03 addresses the following issues:

• Lens Correction (Distortion, Lateral chromatic aberration) is settable for below FA limited lenses.
  smc PENTAX-FA 31mmF1.8AL Limited
  smc PENTAX-FA 43mmF1.9 Limited
  smc PENTAX-FA 77mmF1.8 Limited
• Improved usability by optimize the program of vertical position judgment.
• Improved stability of recording movie for some SDHC Memory card.

Get more details and download the firmware update on Pentax’s website.