[bsaul]

See my question above. You don't need your 2.7 to tell you anything. If you've got a license you can simply install the 3, import the settings and use the same license.

[heyitsnick]

If memory serves, this will install it side-by-side with existing install, whereas doing it in-app upgrades (windows). Could be wrong though.

[scardine]

Just use the "help"->"check for update".