Sylvester Stallone made waves on Monday with this Instagram post, which seems to announce that Brock Lesnar will be playing Ivan Drago’s son in Creed II, set to release in 2018 — but it also might not.

Big challenges come in all shapes and forms! By the way this is just for entertainment, Drago's son will be played by a new unknown…#brocklesnar #rockybalboa1976 A post shared by Sly Stallone (@officialslystallone) on Dec 11, 2017 at 11:05am PST

It all depends on how you read Stallone’s caption, which says:

“Big challenges come in all shapes and forms! By the way this is just for entertainment, Drago's son will be played by a new unknown…#brocklesnar #rockybalboa1976”

Many are taking this to mean that Stallone is teasing Lesnar as Drago’s son in Creed II. While others aren’t so sure. When he says “this is just for entertainment” is Stallone referring to his entire post? Just the photoshop of him fighting Brock?

Or is Stallone saying Drago’s son will be played by a new unknown, and leaving it open ended — which then got unfortunately filled in with a Brock Lesnar hashtag? Right now we don’t know, and Stallone hasn’t confirmed.

Stallone is once again producing and starring in the sequel to the 2015 movie, which garnered a lot of award buzz and grossed $173.6M at the box office. The sequel follows Adonis Creed (Michael B. Jordan), one a quest to avenge his father — who was killed by Ivan Drago in Rocky IV.

Dolph Lundgren is returning to play Ivan Drago, with IMDB not currently listing a name for his son — who right now most are assuming will be played by Lesnar. If true, if could mark the WWE superstar’s acting film acting debut, but playing a scary monster is something he’s already skilled at.