An advertisement in RAIL magazine from Evershot Rail suggests they will be refurbishing the Class 321 fleet for Greater Anglia. The 321 trains are the older sliding door units that form the backbone of outer suburban services between Ipswich and London including branch services to Clacton, Walton, Harwich and Braintree.
The Advertisement says "coming soon" and promises "modern seat design; Bright, quiet and comfortable environment; Air conditioning, LED lighting and new windows."
Greater Anglia will be holding another Tweet The Manager session with station managers north of Chelmsford on Friday (12th April) between 07:30 and 09:00. Join in by following @greateranglia and using the #ttmga hashtag