Polkadot Release Analysis v0.9.40

[hectorb]

In case you missed the analysis from the previous release (v0.9.39):

Polkadot Release Analysis v0.9.39

Polkadot Release Analysis v0.9.39 The following report is not an exhaustive list of changes included in the release, but a set of changes that we felt deserved to be highlighted due to their impact on the Polkadot ecosystem builders. Please do not stop reading the release notes v0.9.39. This report is complementary to the changelogs, not a replacement. Highlights are categorized into High Impact, Medium Impact, and Low Impact for ease of navigation. Also there is a section related t…