Jason Scott
Fractal Fanatic
With computers, I would still get all the OS updates for many many years. If I knew a new Windows OS was coming out next year (which is always known, well in advance) I would wait before I buy. But even if I didn't wait, OS's get updates for many years even after a new OS comes out.
In this case, it is unknown whether the Axe Fx 2 will be replaced by this time next year. $2000+ is spent on the unit and it may be possible that you will only have updates for only a year.
If I could get reassurance that this happening is highly unlikely, I'd feel better about it. However, getting that reassurance will probably not happen.
On The Gear Page forum, Cliff Chase stated that ADI has given them plenty of notice and will continue to produce parts for a couple of years. Additionally, he stated that they have enough working capital to purchase enough DSP's to last for 20+ years of Axe-FX's if need be.