A cryptic social media video is the latest in a trail of clues pointing to a much-anticipated reunion after a 16 year hiatus.
And one of the band's closest long-term associates thinks the signs are all pointing in one direction.
Graham Ashton, who scouted the band for Polygram Records when it was signed to the major label in 1993, Â was enjoying the speculation.
"I haven't got any inside word, but my spidey-senses tell me that something really big is happening," he told AAP.
Starting up in Brisbane in 1989, Powderfinger is one of Australia's most successful rock bands, with five albums topping the ARIA Charts and 18 ARIA awards over 21 years of recording and touring.
Their best known songs are firm favourites in the Australian songbook, including My Happiness, Lost and Running, Sunsets, and (Baby I've Got You) On My Mind.
The teaser campaign started earlier this week with billboards in capital cities featuring grids of numbers and letters, which could be decoded as references to the band's discography and the date of their final live show in Brisbane in 2010.
Next, an Instagram account appeared titled The Return Of The Electric Horsemen - a reference to the final track on the 1996 album Double Allergic, now 30 years old.
Mr Ashton said the Instagram reference sealed it for him.
"That, for me, was the moment," he said.
"I thought, OK. It just feels like the way their minds would work, and it felt like it's real.
"It feels like something big is happening. I hope it's a tour."
On Thursday, the band's official Instagram account shared a video of more mysterious letters and numbers, with more cryptic messages.
But after a 16-year absence from the stage - not including their special One Night Lonely COVID-19 performance when the band played in isolation from each other - a tour would be a big call.
Band members are now all in their mid to late 50s, and Mr Ashton said they would need to work hard to be physically prepared for a tour.
"They're all going to need to rehearse really hard and, you know, maybe make some lifestyle adjustments," he said.
But Mr Ashton said the band's broad appeal was undimmed, and if anything their audience had expanded as a result of their long hiatus.
He said the secret of the band's success was its relatability.
"Everybody felt like they knew them," he said.
"They were five guys that could have been your mates."
There was one other not-so-secret sauce in the band's mix.
"They had a great f***ing rock singer," Ashton said.
"There's only a handful of people who can sing rock music as well as Bernard Fanning."
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