Saw Concept Art Megatron, Legacy Sandstorm, Gears, Cybertron Starscream, and Silverbolt in Smyths Limerick today. Plenty of RotB Optimus and Legacy Blitzwing on shelves too.
Magmatron is available for home delivery via Smyths website. Still saying May for in-shop stock but I wouldn't be surprised if he starts popping up before the end of this month.