Was Gear 5 planned since Chapter One of One Piece?

Oda is a master of foreshadowing. But was Gear 5 planned since Chapter One of One Piece? Or a random power-up as some fans believe?

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One Piece Luffy Gear 5 explained: Release date, animation

One Piece Luffy Gear 5 explained: Release date, animation

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Was Gear 5 planned since Chapter One of One Piece?

Was Gear 5 planned since Chapter One of One Piece?

An unfinished One Piece manga chapter was released to stick to deadlines