This image, of a vehicle or object not yet positively identified, appeared on the revised Halo2.com website revised on October 15. It could be a revised dropship, but it is more likely a Boarding Ship, a vehicle seen only from the inside during Halo 1. The Covenant may have used these to attach to the Pillar of Autumn's escape pod doors.

Its appearance at Halo2.com may indicate that we will once again be seeing Covenant boarders on UNSC vessels in Halo 2.