Interesting to note the Scotrail tender for new rolling stock has been published:
https://www.find-tender.service.gov.uk/Notice/038622-2025
ScotRail Trains Limited (SRT) Market Engagement Notice
SRT is launching a market engagement exercise in relation to its proposed procurement for the replacement of some of its aging Diesel and Electric Multiple Units with a
new fleet of Electric Multiple Units (EMUs) and Battery Electric Multiple Units (BEMUs). The proposed procurement is planned for 2025-2027, with initial deliveries expected by late 2031, subject to approval from Transport Scotland and the Scottish Government.
It is anticipated that under a Manufacturing and Supply Agreement (MSA) the core order will be for approximately 69 units, potentially comprising around 41 EMUs and 28 BEMUs. There may also be a requirement for additional option orders, although this will be clarified as part of any Contract Notice.