Feedback has driven Forgeworld to release these rules. So here is your chance to take them into your games with current and up to date rules.
via Forgeworld on the Warhammer Community
https://www.warhammer-community.com/2018/06/15/15th-june-new-rules-by-popular-demandgw-homepage-post-2fw-homepage-post-1/
Terrax-pattern Termite Assault Drill:
https://whc-cdn.games-workshop.com/wp-content/uploads/2018/06/Terrax-pattern-Termite-Assault-Drill.pdf
Secutarii Hoplites:
https://whc-cdn.games-workshop.com/wp-content/uploads/2018/06/warhammer_40000_secutarii_hoplites_en-3.pdf
Secutarii Peltasts:
https://whc-cdn.games-workshop.com/wp-content/uploads/2018/06/warhammer_40000_secutarii_peltasts_en-1.pdf
"Recently, we’ve had loads of requests from fans on the Forge World page for rules for the Termite Assault Drill and the Skitarii Titan Guard in Warhammer 40,000. As promised, your feedback has been shared with the Forge World team, and they’ve been hard at work on a set of datasheets designed to add these units to your armies – and you can download them below:"
You download them above for yourself, or check them out below.