"John Wick: Chapter 4" ending leaves fans speculating on John's fate.
John Wick gets shot, imagines wife, collapses, leading to ambiguity.
Keanu Reeves hints at possibility of a fifth installment.
Theories arise: John faked death, allies seek revenge, High Table overthrown, series finale.
Director filmed alternate ending with clear survival, but chose ambiguous version.
Test audiences surprisingly prefer enigmatic conclusion.
Fans eagerly await future developments in the "John Wick" franchise.
There are various theories about what could happen next in the franchise, including John faking his death, a quest for revenge, overthrowing the High Table, or the series ending.
Director Chad Stahelski revealed that an alternate ending was filmed where John Wick unequivocally survives