Well Liz there's at least tentative plans for further dates in the new year and while my track record for predicting where SOAPM might play isn't the strongest - I got one out of eleven - I'll presume to at least suggest there's a good chance of one of the 2018 engagements being at a Cardiff venue such as the New Theater or the Wales Millennium Center, both of which regularly host touring productions - eg. the production of Sister Act
helmed by SOAPM's director Craig Revel Harwood will be at WMC in three weeks and the Cilla
musical plays the New Theater this autumn - : at present both the WMC and the New have a wide open schedule for the first quarter of 2018.
BTW I'm not sure if it's your thing but the revival of the 60s revue Shout!
plays the New Theater the third week of April (subsequent to an engagement at the Churchill the Bromley theater where SOAPM will premiere).
There doesn't seem to presently be any new developments re either the SOAPM musical or the biographical play to be directed by Maria Friedman - altho it was announced that the latter will be workshopped in April - but IMHO Dusty fans can be encouraged by the evident success of the Friedman-helmed revival of Stepping Out
which debuted at the Chichester Festival last autumn and is currently in the fifth week of a fifteen week engagement at the Vaudeville Theater in Westminster: the critics seem to be trying to outdo each other praising Friedman's direction so there'll be no lack of ammo for advance promo for Friedman's Dusty play next year.
BTW - forgive me if this has been obvious to everyone but me but I've just realized the sign in the SOAPM promo pic is shaped like a turntable with a tonearm. IMHO the musical deserves to be a hit on the basis of that alone!