released by Apple on Wednesday was hiding some changes that may seem minor at first glance, but could indicate that Apple is about to launch something major.

reports that Apple's built-in TextEdit application's icon's highest quality version has been increased to 1,024-by-1,024 pixels, double that of the previous 512-by-512 pixels in the icon before the update. The increase in pixels readies the icon for a Retina display.

The file size of the icon also grew from 209 kilobytes in OS X 10.7.3 to 1.7 megabytes in 10.7.4, reveals the report.

This could this mean that Apple's new MacBook line-up, which is expected to arrive within weeks, will feature Retina displays like the one found on the new iPad, which has 3.1 million pixels, a million more than a HDTV.

Apple describes a Retina display as having pixels that are "so close together, your eyes can't discern individual ones at a normal viewing distance."