I believe HRT are planning at least one tribute livery. As to which one it will be I have no idea.
The Fair Dinkum Sheds entry does have a “new retro” design, which is just white with green racing stripes, but it’s intended to represent the 1960s as a whole, rather than one particular car. I was kind of hoping that if they didn’t do a throwback to the Perkins-Castrol liveries of the 1990s, Russell Ingall would. And while he does have a new livery, it’s not a historic one.
SBR have tweaked Shane van Gisbergen’s design to include more orange, but it’s not a tribute livery.
And I wish Jim Beam had been ameanable to a livery change for their cars. It would have been great to see GREENS TUF and RED ROO alongside the TRU-BLU design.