On 16 September 2019 it was confirmed that a £26m investment into the Isle of Wight's railways would mean 5 class 484 units would replace the ageing class 483s, which had become unreliable to the point that services on the line had to be halved in frequency for around a month. The new trains are being built by Vivarail as third-rail units using D78 Stock bodyshells, and island-based stakeholders including the Isle of Wight Council and Solent Local Enterprise Partnership are contributing £1m to fund reinstatement of a long-removed passing loop at Brading to allow them to run at even half-hourly intervals. Network Rail have also agreed to fund £5m of upgrade work on Ryde Pier to secure the line's future, because failure to do so would be terminal to the line's operation. The first of the Class 484 trains was originally due to arrive on the line in the summer of 2020.