Thanks for sharing the press release. It's a bit odd that the ORR website states Central. As the rail regulator that is quite a thing to get wrong, unless of course the ORR are correct and FirstGroup have got it wrong and will be in for a surprise when the management and press onboard the inaugural service are standing around Queen Street staring at the departure board wondering where the train is, while it's sitting at Central.Yes of course Queen St as confirmed on First's web site. (ORR mentioned Central).
Weirdly the Lumo website has Glasgow Central as one of the stations it serves:

Am I right in saying that this will be the first time an open operator will be serving Queen Street and also that Lumo the first non-ScotRail operator to serve the station since privatisation?