I've been wanting to bite on the new Sony a7 mirrorless full-frame camera, but reviews are surfacing poor JPEG quality compared to other FF cameras. While I often shoot RAW, JPEGs are critical if you want to use the WIFI to send images to your phone for uploading or proofing.
Would it be possible for Sony to significantly increase JPEG quality (sharpening, WB,posterization, etc.) with a firmware upgrade, or are there other variables that can only be addressed with a new version (processor, meters, etc.)?