9.1 M+ Item Level Increase date?

Gameplay Dungeons, Raids and Scenarios
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So cant remember how things were done in BFA (I try to forget that expac), but for 9.1, will the item level of the drops in M+ Dungeons be raised on the initial release date of 9.1 or will they be raised the same week that Normal/Heroic raid will be released?

Thanks for the info.

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I vaguely remember them increasing them the week of the patch in the past, but putting a cap on item level the dungeons drop until the raids release.

My guess would be they hard cap it at the new normal difficulty item level (226) the first week of the patch and then let it increase to 236 the following week when the raid is out. Just a guess though.

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