Re: Version numbers by another name, what a load of rubbish.
It is really funny to see sometimes comments about how it may be with Solaris written by people have no idea how this OS function on the market :)
Example: kernel DDI (Device Driver Interface) has not hanged in last 10 years and still is in v3 which means that if you have 10 years old binary driver you can load it to kernel space Solaris 11.3 latest SRU. Please try to do such think with Linux :D
Try to read Solaris ABI license where you have GUARANTEE binary compatibility on binary level for veeery looong time.
On other words your example phone call with support is only imaginary.