I’m currently on Appian v7.8 and I'm starting to plan my next upgrade for 1s

Support expiration for v7.8 is, 31 January 2017

Sounds like you saying I should stay on v7.8 for another year.

For future reference there is a end of life report on forum..

forum.appian.com/.../endoflife

I'm aware of this thank you.
My concern here is on the support for application still in the portal space.
We still use the apps portal and have not moved to Tempo.

There was no deprecation of portal announced for 7.11, nor is there a specific time in the future. However, for broad browser support, mobile support, etc and other reasons, I recommend using Tempo.

thank you Myles for the conformation.
So we can expect the same Appian support we have today when we upgrade to next version even if we remain in the portal space.

I'm actively working with the user side to come up with a plan on migrating into Tempo and hopefully the effort will be accepted. Once this happens, my goal is to migration but until then, this is where we live.

confirmation - sorry

Yes, in general same support regarding portal, but please review the release notes for specific details on changes that might affect your deployment.