Sony fans like to claim the A7 as the first full frame, mirrorless, hybrid camera. Sorry, that honor goes to Leica. They debuted the M240 in 2012. Sony followed with their announcement in the Fall of 2013.

 Leica also patented, and built to proof of concept,  the first autofocus system as far back as the 1960s. Never commercially produced. 

Everyone acts as though Leica is lagging. They're just waiting for everyone else to catch up...