I have the same situation.
To buy 1080 and wait or 980ti and not to wait?
I was asked to select a new X2 card in my office.
My decision is not to wait and go for 980ti
Because I'm not going to buy octane 3 to the office and i will stay with 2.06 that will not work with 1080 pascal according to what ...

the camera presets is for all the menus and i need alots of time to change jest the Octane imager menu and Octane postprocessor menu and when i import 10 cameras from tracking software to maya i need to do lots of exhausting work
to this menus.
octane render plugins 2.06

thanks!