To be blunt, its a 900-series with a scaled-down version of the X-7 series adjustable target trigger.
That's it...nothing really changed except the trigger & the new stock...which is better than the 900-series synthetic.
I've heard rumours that the stock is supposed to be bedded from the factory...but have yet to take one apart to find out.
And yeah, Boyd's does make a fine stock
Come to think of it, nothing except trigger & stock changes differ from the original 25N...lol
A gunsmith can simply install an XT trigger onto an older 25N/825/880/925/980/etc...
same applies to the .22WMR & .17 versions...