from 19 April 2017 – 216 occupations removed and 59 others restricted, 24 occupations restricted to regional Australia, Occupational lists renamed, validity period for occupations on STSOL 2 years.
from 01 July 2017 – English salary exemption $96,400 to be removed, training benchmarks to be changed, mandatory penal clearance certificates.
before 31 December 2017 – collection of TFN for 457 visa holders for ATO data matching, publication of sanctioned sponsors.
from March 2018 – 457 visa abolished and replaced with TSS visa which will comprise the Short-Term(2 years) and Medium-Term stream(4 years).