Since a few years Eagle development seems to have got stuck in the past.
Unfortunately this is true. Once a world leader in this field, Cadsoft has been falling behind at an ever increasing rate. Farnell purchased CadSoft Computer GmbH in September 2009 for the purpose of integrating the Farnell/element 14 component database into the CAD software. This was to drive sales of electronic components which were hit pretty hard after the 2008 GFC.
Farnell seems to have figured out that only supporting Cadsoft Eagle is not the future
Cadsoft has not performed well since 2010. Sales have been down & profits dipped this past year such that Farnell formed the opinion that it should no longer be their flagship CAD offering.
and they started to talk to other players in the market
Farnell were left with no choice. They have tried for 4 years now to push around the management of Cadsoft to get improvements in the EAGLE offering ............ with little success.
a handful coders who are heading towards their pensionists age.
You have hit the nail on the head. There has been no substantial new blood added to their coding team since the takeover in 2009. The existing coders at Cadsoft are in fact now all pretty close to retiring.
Cadsoft survival will depend on bringing Eagle into the 3D makerworld or not.
3D aside, it may already be too late.
Farnell's management are pretty unhappy with the lack of EAGLE development since they took over the reins. They have tried several initiatives to force Cadsoft to move into the 21st century, but unfortunately none of the movers & shakers on the board are coders, which means they can pretty easily have the wool pulled over their eyes.
In the end they were forced to look elsewhere for this expertise. They saw a glimmer of hope when Altium announced CircuitMaker .............. and put a proposal to Altium that Altium could hardly resist.
The result is Circuit Studio. Yes, it is rather green around the edges & has some compatibility problems with AD, but they have done a pretty good job in just 6 months.
Give it another 6 months & users will find that Circuit Studio will be improved substantially.