Originally Posted by joepilot
Most aircraft will continue to track the centerline following an autoland (by tracking the localizer), but some are designed to disconnect as soon as the nose is down.
Or equipment level. The 737NG for example is available with a fail operational autopilot system that does an automatic rollout, however most airlines do not go for that option and in the case of the fail passive system it will disconnect with nose gear touchdown. The fail operational system is a very impressive kit, very consistent and smooth landings (best on GLS instead of ILS) and it has a higher crosswind limit than the fail passive one.
Interesting enough i found the 737NG fail operational system better than the A320 one, bit that may be personal preference. But in my experience the A320 can sometimes end the landing a bit high.