@Plaz
Jens Schoenfeld has never made an 060 card that I have ever heard about.
However 2 other persons in the Amiga community have recently made 060 cards:
Thomas Hirsch made 5 working 060 cards for the Natami prototypes.
That FPGAreplay guy (I forgot his name) has made at least 1 or 2 060 cards for the replay and will probably start cranking them out en masse before long. But his 060 card only has 128MB RAM which is like exactly what I (and various friends) already have. So if I buy one its a sidegrade, not an upgrade. :/
Well actually Georg Braun who made GBA1000 mobo also made a 060 accellerator that plugs into a 030 cpu socket. I personally think this is way way cool, and could potentially give, every one who has a 030 in a socket, a 060 board.
And actually if you take a look at his rev 5 of the GBA, it has a 68060 directly mounted on the motherboard.
Maybe it could be wise to contact him.