援引澳洲移民局官網(wǎng)上的話：On18April2017,theHonMalcolmTurnbullMP,PrimeMinisterofAustraliaandtheHonPeterDuttonMP,MinisterforImmigrationandBorderProtectionjointlyannouncedthattheTemporaryWork(Skilled)visa(subclass457visa)willbeabolishedandreplacedwiththecompletelynewTemporarySkillShortage(TSS)visainMarch2018whichwillsupportbusinessesinaddressinggenuineskillshortages.也就是說(shuō)，2017年的4月18日，457被宣布將被廢止，而一個(gè)新的簽證將會(huì)取代它在2018年3月。

繼續(xù)援引澳洲移民局官網(wǎng)上的話：TheTSSvisaprogrammewillbecomprisedofaShort-TermstreamofuptotwoyearsandaMedium-TermstreamofuptofouryearsandwillsupportbusinessesinaddressinggenuineskillshortagesintheirworkforceandwillcontainanumberofsafeguardswhichprioritiseAustralianworkers.fouryearsafteritisgranted–ifyouroccupationislistedontheCombinedlistofeligibleskilledoccupationsorthisperiodisrequiredduetointernationaltradeobligations；twoyearsafteritisgranted–ifyouroccupationisnotlistedontheMLTSSL.如果被擔(dān)保的職業(yè)在長(zhǎng)期緊缺職業(yè)列表里，那么就是能拿到一個(gè)四年的臨時(shí)工作簽證，否則就是兩年。以前的457轉(zhuǎn)186/187已經(jīng)不見(jiàn)了。