Zipse's comments highlight BMW's change in thinking at the automaker about the architecture, which originally had been planned to be fully electric but also underpin cars with gasoline and diesel internal combustion engines, including plug-in hybrids.
BMW said at the IAA Munich auto show in September that the Neue Klasse would be electric-only.
On Thursday, Zipse said the architecture will be "mainly focused on the middle car (midsize) segment. It does not cover from the lower segments all the way to the luxury segments," he said.
However, after its initial launch on midsize cars, BMW plans to expand the architecture's use for all-electric cars in other segments.
"The Neue Klasse starts with models from the middle car segment, but of course there is more to come," a BMW spokesman told Automotive News Europe. "The Neue Klasse is our model range for the future – from the high-volume segment to exclusive high-performance models," the spokesman said.
The strategy shift to use the platform only on full-electric midsize models will allow BMW to keep combustion engines for longer on larger models.
BMW is launching a new generation of its 7-Series flagship sedan this year with plug-in hybrid, diesel and gasoline drivetrains, and a full-electric variant badged as the i7.
Zipse said on the earnings call that BMW aimed to hit cumulative sales of 2 million full-electric cars by 2025 on its way to a target of having half its sales being electric-only by 2030.
"We are doing everything we can to meet this goal earlier," he said.
The Neue Klasse platform will play "a crucial part" in the ramp up of EV sales for the company, Zipse said: “It represents a quantum leap in technology."
The architecture will have the automaker’s next-generation electric drivetrain “with more output, new cell chemistry and new cell formats,” Zipse said.
Zipse's clarification that the platform will be reserved only for battery-electric vehicles (BEV) was noted by analysts at Deutsche Bank.
"We view it as positive that BMW says that from 2025 onward the Neue Klasse will be BEV only, while a lot of market participants had so far understood it was BEV first," the bank wrote in a note to investors.