The new government will be symbolically revealed on Kiev's Independence Square, the epicentre of three months of protests that culminated in carnage last week that triggered the weekend ouster of president Viktor Yanukovych.
"At 7:00 pm (1700 GMT) we will take to the stage to present the new government to the square," Valeriy Patskan, a lawmaker from the party of former boxing champion Vitali Klitschko, said in a statement on the UDAR (Punch) party's website.
In an apparent bid to begin healing wounds in the divided nation, acting interior minister Arsen Avakov said he had dissolved an elite riot police unit known as the Berkut, despised by many for its heavy crackdown on the anti-government protesters.
The anti-government protests started in November over Yanukovych's decision to ditch an historic EU trade deal in favour of closer ties with old master Russia, and ended in a week of Kiev carnage that claimed nearly 100 lives.
The interim leaders' headaches are compounded by Moscow's decision to freeze payments on a massive bailout package that Russian President Vladimir Putin promised to Yanukovych as his reward for rejecting closer EU ties.
The Ukrainian government faces foreign debt payments of USD 13 billion this year and has less than USD 18 billion in its fast depleting coffers - a grim equation that has forced it to seek as much as USD 35 billion from Western states.
US Secretary of State John Kerry and Foreign Secretary William Hague also rejected Russia's claim yesterday that Ukraine was being forced to make a choice between the East and West.
