No, most likely not going to happen. Silver Surfer really never crossed over into Avenger books. What they look like they have planned, could be epic though.

Spoiler Alert-

Yes, but Thanos, who has fought the Avengers a dozen times, the Silver Surfer never appeared in Avengers books. Crossover events, like Infinity Gauntlet, Infinity War, Infinity Crusade etc..., everybody in the Marvel Universe appeared so that doesn't count.

Thanos is a cosmic character, so there have been Silver Surfer appearances in books like Annihilation, or The End, but those were stand alone books and did not feature Avengers other in very small cameos.

Thanos is an Avengers villain.

I'll put in a pinball analogy, since anything is possible. Silver Surfer being in the next Avengers film would be as likely as Stern announcing they will do a remake of MM. Possible-yes, Likely- No

Have a better chance of seeing Adam Warlock, and doubt that will happen either.

Love Ron Lim's stuff. You're right, a Silver Surfer pin would be awesome. Talk is that they are going to do a FF reboot, and the Thing will be CGI.