The talk to have S-70 to augment Bell 412 actually already around for a decade. Infact talk to have something to augment Bell 412 is already around since early 2000. However at that time (early 2000) conditions on budget and political (US Embargoes) make Indonesia choose MI-17 instead.
S-70 have bit advantages against Bell 412 in carrying capacity and speed. However I suspect the plan for S-70 more to prepare MI-17 retirement. Just like MI-35 which I do suspect going to be phase out in time with more AH-64E (if plan and budget permits).
Off course it is depends on whose going to win the election. If Prabowo or Anies that win (considering Anies potentially will be back by SBY camp), US procurement probably going to go ahead more smoothly. However if Ganjar wins, and considering those who support Russian and Chinese procurement are coming from his political factions, then the situations can change.
Jokowi seems in his 2nd term are closer to Western leaning factions, although he is also not abandoning his original factions. Perhaps that's the reason why he goes to G7 summit before, but now also goes to BRICS summit.
Not want to digress on politics, just shown as usual in Indonesia, politics can be more decisive factors on Government procurement even in Defense. That's why I said in my post, Prabowo got green light to begin moving up procurement assets from US. However unlike some Frenchie procurement, US ones are still behind in contractual stages. Thus politics from ellections result still can change it.
As for heavy helicopter, rumours say MI-26, CH-47 and CH-53 still in consideration. However considering current Geopolitics, CH-47 and CH-53 that moving ahead in consideration stages. Again ellections results can still change that. Just to shown the consideration for heavy Helicopters still there.