Since we are comparing notes about new vehicles, the only ones I've heard much about are single deckers for the 25 in Sheffield (Bradway - Woodhouse, the old Yorkshire Terrier route).
There were new Streetlites for the 1 (High Green - Batemoor) last year, partly funded by the authorities, but most of the Stagecoach vehicles are around eight years old now - we had quite an influx in the early years of Stagecoach but then went down the pecking order after that (and fair enough)..
Also, since I don't think it's been mentioned on here, the 737 comes off next month and is replaced by a half hourly X6 (Sheffield - the "new town" of Waverley - Advanced Manufacturing Park - Wickersley on the outskirts of Rotherham - the Amazon warehouses and "iPort" on the edge of Doncaster - Doncaster Sheffield Airport). I don't know if it'll serve the Yorkshire Wildlife Park on it's way to the Airport. It does tie in to the Parrots Corner P&R on the outskirts of Doncaster where it'll connect with Stagecoach services to Bawtry etc. It ties a few "non-traditional" areas together - there'll hopefully be a lot of jobs at the AMP and iPort over the next few years - just like the way that Stagecoach have adapted to the Amazon warehouse at Dunfermline or the various "logistics" warehouses on the outskirts of Barnsley (ASOS etc). A lot of young people working antisocial hours etc.
The "express" network has been beefed up a lot in the past few years - the X17 from Matlock/Chesterfield to Sheffield/ Meadowhall/ Barnsley, the X10 from Barnsley to Leeds, the X20 from Doncaster to Barnsley etc). How long until the old 909 (Sheffield - Meadowhall - Doncaster - Scunthorpe - Grimsby/Hull) makes a comeback?