For up to date details of the LPC/STM32F4 RRF port V3 please see following links: https://github.com/gloomyandy/RepRapFirmware/blob/v3.02-dev-unified/WHATS_NEW_UNIFIED.md https://github.com/gloomyandy/RepRapFirmware/wiki
This file is no longer maintained. See https://github.com/Duet3D/RepRapFirmware/wiki/Changelog-RRF-1.x-&-2.x instead.