They have largely scoured for talent from the NFD for their signings.
These include Nedbank Ke Yona talent search team product Ricardo Versuur from Super Eagles‚ and left-back Ricardo Williams and midfielder Mlungisi Mbunjana‚ both from Cape Town All Stars.
Former Jomo Cosmos centreback Denzil Haoseb and goalkeeper Loyd Kazapua‚ from Namibia's African Stars‚ are two players signed from that country.
Midfielder Lesenya Ramoraka‚ scouted playing for Botswana at the Cosafa Cup in June‚ is a third foreign signing.
Highlands have also signed Ivan Mokoena from Super Eagles‚ attacking midfielder Siphesihle Zwane from Mbombela United and centreback Sello Motsepe from Real Kings.
Roberto Fragale is promoted from the development.
Highlands CEO Larry Brookstone said the club might make "one or two more signings" for 2018-19.
The club also announced a new shirt sponsor‚ Jonsson Workwear‚ at a season launch function at their Makhulong Stadium home ground on Wednesday.
Highlands were relegated as the last-placed team in the PSL in 2016-17.