Requires firmware 4.2.1+
Requires Greenpois0n's BootLogo animate tool, it will be installed automatically

Two logo:

Greenpois0n apple in the green circle, eyes cycle off and on glowing green until final image

Greenpois0n apple head on black background, not in the green circle, eyes cycle off and on glowing green until final image

BootLogo is configured from Settings.app

See More Info below for Screenshots