The MTFS leaves some wriggle room on whether a Scottish Spending Review will follow later this year. It states:
Irrespective of the UK Government's decision about its Spending Review, the Scottish Government plans to hold a multi-year review of spending
but also says:
On resource [spending], we currently plan to publish indicative budgets in December 2019 alongside the Scottish Budget 2020-21, but that may not be possible if we do not have sufficient clarity from the UK Government on its spending plans at that stage.