The Apollo 4060/3060 and its little brother the 4040/3040
has a socketed cpu and you can switch it to use 040 or
060 processor. Unfortunately you also need to plug in a
special power converter mini-addon since the 060 is so
much less power-hungry than the 040.
Had a 060 from the beginning, so I don't know if there are
any other more subtle differences between the Apollo
4040/3040 and the 4060/3060, but I doubt it.
.
SlimJim