The Adeptus Mechanicus codex was released in September 2017. Anything released after that date will not be in the print version of the codex.
And the list is:
Archaeopter Transvector / Fusilave / Stratoraptor
Skorpius Dunerider / Disintegrator
Pteraxii Skystalkers / Sterylizors
Serberys Sulphurhounds / Raiders
(They all have their rules in the box except the Manipulus IIRC