So everyone seems to be betting on the new character that's on the huge two page spread in Venom #25 in the upcoming Venom #27, since he failed to appear in Venom #26 despite a huge number of retailers going all out, doing store exclusives for the cover of that issue.
But here's a one page spoiler I don't think anyone was expecting in Venom #27 that's on final order cutoff with a recent announcement of a new 1:100 Ratio Variant (which is already seeing pre-orders up over the $100 range), which was likely announced after retailers caught a glimpse of this page and went back to bump their own orders.
This page is what comes after a battle between Venom and Virus. Eddie makes his way back to where he left Dylan and this is what he discovers.
So there's a nice spoiler. Use this to either buy a couple more issues in case it becomes a killer spec book or maybe it turns out to be a dud with it getting a massive print run. Either way, even if the mystery character doesn't show up, we know there's 6 new appearances of this future Symbiote Avengers team in this issue.