The speaker of the Ukrainian president specified that it would be a telephone conversation.

Biden will talk to Zelensky after 22: 00 Kiev time / photo of the OPU
Negotiations between US Presidents Joe Biden and Volodymyr Zelenskyy of Ukraine will take place today, January 2, after 22:00 Kyiv time.
About this in Facebook Zelensky’s spokesman Sergei Nikiforov said.
“Colleagues, Happy New Year holidays! I wish all of us only good news in 2022! One of these is very soon. Presidents Volodymyr Zelenskyy and Joe Biden will have a telephone conversation today after 22:00 Kyiv time,” Nikiforov stressed.
The President’s speaker did not name the main topics of the talks.

Nikiforov told what time Biden and Zelensky will talk / screenshot
Earlier, Zelensky announced talks with Biden. The President stressed that they will take place on January 2. He noted that during the conversation the leaders of the states will coordinate their steps for the sake of peace in Ukraine and security in Europe.
Read alsoAmbassador spoke about additional US assistance to UkraineAs UNIAN reported earlier, on December 30, US President Joe Biden, during a telephone conversation with Russian President Vladimir Putin, urged to reduce tensions in relations with Ukraine and warned of his readiness to react decisively in the event of an invasion of Russian troops into Ukraine.
US and Russian diplomats will hold security talks in Geneva on January 10 to discuss both countries’ military activities and rising tensions over Ukraine.
A meeting of the Russia-NATO Council is scheduled for January 12, and a multilateral meeting within the OSCE is to take place on January 13.
On December 31, NATO Secretary General Jens Stoltenberg discussed with US Secretary of State Anthony Blinken issues related to the concentration of Russian troops near the borders of Ukraine.