As we all know Halo 4 didn’t have playable elites and this disappointed a lot of fans. I wonder if Halo 5 will do the same and make elites not playable. The beta featured only spartans but maybe elites could be playable when the game is actually released.
Here is a thread with almost 500 pages of discussion on this topic. No offense, but you’re probably not going to see this much conversation here. If you want to make your voice heard, try posting in that topic 
As far as my opinion goes, I hope they are back. I’ve played as an Elite whenever possible, they may be the most badass race ever!
Ultimately, we don’t know much on the topic. 343i has created the Anvil Initiative, and many feel that is a nod to Elites being in the game. The exclusion of Invasion others see as a sign there will be no Elites. Cross your fingers!
they might be