With thanks to Steve Mutly over on the 'Stagecoach Enthusiasts' Facebook Page, we have some registration details on the 10 Plaxton Panther LEs for Fife:

54501 YX18 LHL
54502 YX18 LHM
54503 YX18 LHN
54504 YX18 LHO
54505 YX18 LHP
54506 YX18 LHR
54507 YX18 LHT
54508 YX18 LHU
54509 YX18 LHV
54510 YX18 LHW

A further 9 (54511-9) are also due for delivery shortly however their allocation is not yet confirmed as it appears management haven't decided for definite where they should go.

Also recently delivered is E200MMC 37467 (YX18 KUW) - the first 8.9m example for Stagecoach. It's based at Porth depot for use on the Pontyprid Town Centre Circular service 99 during the day.
Stagecoach in South Wales - 37467 - YX18 KUW by philipweaver, on Flickr