Chelmsford is moving ahead however it may be a while before things ramp up on site again. They have done much of the access roads, site clearance and preparation. They have held off most (maybe all) groundworks due to changing the plans. Many long term volunteers have been released from their assignment.
From what I can tell talking to contacts they are working through changing the designs to take into account the reduction in Bethel staff (-25%) and removal some of the "luxuries" like sports facilities and larger laundry and catering areas.
You can now count on one hand the number of projects the worldwide design team are working on. Warwick and Chelmsford are two of them.