Question: When will the current class of Australian multiple unit cars operated by NSW Trainlink in New South Wales enter service?

Context articles: NSW TrainLink Intercity Train Project
New South Wales Endeavour railcar
South Coast Line
NSW TrainLink
Kiama railway station
NSW TrainLink H set
New South Wales Xplorer
Bomaderry railway station
RailCorp
NSW TrainLink V set

The NSW TrainLink Intercity Train Project is an initiative of Transport for New South Wales to procure 512 new carriages to replace NSW TrainLink's Intercity electric multiple unit fleet, freeing some trains for suburban use and the succeeding the entire V Set fleet.
 The trains will operate on services from Sydney to Newcastle, Lithgow and Kiama.
 The trains are expected to enter service between 2019 and 2022.
The Endeavour is a diesel multiple unit train operated by NSW TrainLink on passenger rail services in New South Wales, Australia on the Hunter Valley, Main Western, Southern Highlands and Illawarra lines.
 They are mechanically identical to the Xplorers.
 All 30 carriages were built by ABB Transportation in Dandenong, Victoria.
The South Coast Line is an intercity rail service operated by NSW TrainLink that services the Illawarra region of New South Wales, Australia.
 The service runs from , and runs the entire length of the eponymous South Coast railway line to .
 The service also runs along the Eastern Suburbs railway line at peak hours and the Port Kembla railway line to .
 It is operated with NSW TrainLink H sets and Sydney Trains T sets, with Endeavour railcars operating the service on the non-electrified line between and Bomaderry.
NSW TrainLink is an Australian brand for the medium and long distance passenger rail and coach services of the New South Wales Government's transport authority, Transport for NSW.
 NSW TrainLink services operate throughout New South Wales and extend into the neighbouring states and territories of Victoria, Queensland and the Australian Capital Territory.
 Train services are operated by the government's NSW Trains.
 Coach services are contracted to private operators.
Kiama is an intercity train station located in Kiama, New South Wales, Australia, on the South Coast railway line.
 The station serves NSW TrainLink diesel multiple unit trains travelling south to Bomaderry and electric multiple unit trains north to Wollongong and Sydney.
 Premier Illawarra and Kiama Coaches operate connecting bus services to the surrounding towns of Gerroa, Jamberoo and Shellharbour.
 Early morning and late night services to and from stations to the south are provided by train replacement bus services.
 Kiama Station is listed on the state heritage register.
The NSW TrainLink H set or OSCAR (Outer Suburban CAR) is a class of electric multiple unit built by UGL Rail, Broadmeadow for CityRail in New South Wales, Australia.
 They are operated by NSW TrainLink.
 These sets operate services from Sydney to Hamilton (Newcastle), Springwood and Kiama.
 The first entered service in December 2006 and the last in December 2012.
 They are formed into 55 four-carriage sets.
The Xplorer is a diesel multiple unit train operated by NSW TrainLink on regional rail services in New South Wales, Australia from Sydney to Armidale, Moree, Broken Hill, Griffith and Canberra.
 The first Xplorers entered service in October 1993, and are mechanically identical to but feature a higher level of passenger amenity than the Endeavour railcars.
 All 23 carriages were built by ABB Transportation in Dandenong, Victoria.
Bomaderry is a single-platform intercity train station located in Bomaderry, New South Wales, Australia, on the South Coast railway line.
 The station serves NSW TrainLink diesel multiple unit trains to Kiama.
 Early morning and late night services to the station are provided by train replacement bus services.
 A siding near the station is used by freight trains operated by the Manildra Group.
Rail Corporation New South Wales (RailCorp) is a State-owned corporation of the State of New South Wales, Australia established under the "Transport Administration Act 1988" in 2004.
 From 2004 until 2013, RailCorp operated passenger train services in New South Wales and maintained rail infrastructure within the New South Wales Metropolitan Rail Area.
 From 2013, operation and maintenance functions were transferred to the new Sydney Trains and NSW TrainLink agencies, leaving RailCorp as the legal owner of a portfolio of $28.6 billion of railway property, mostly within metropolitan area.
 Other functions include network access, leasing and managing the NSW Government's contract with Airport Link Company.
 The acting chief executive of RailCorp is Sydney Trains chief executive Howard Collins.
The V sets are a class of Australian electric multiple unit operated by NSW TrainLink in New South Wales.
 These stainless steel double deck trains operate on Interurban services on the Main Western line to Lithgow and Main Northern line to Hamilton (Newcastle).
 These trains no longer operate on the NSW TrainLink South Coast Line to Kiama or Port Kembla due to the newer H sets.