Gerrit van Rooyen, of NKC African Economics, said investors would scrutinise Ramaphosa's speech for clues on his policy preferences, as well as signals that President Jacob Zuma could be forced to step down soon.
He said the visit by President Kenyatta would strengthen the bonds among the citizens of the two countries and the ruling parties.
Kenyatta said they seek to increase connectivity between South Africans and Kenyans, and that there was an understanding that the future of Africans are "tied at the hip".
Zuma said Kenyatta could participate in the birthday of the ruling party "because we have had very good discussions about how to make our parties work together".
"As we take this ANC into an era of unity, an era of renewal, an era of service to the people and our country, we take this opportunity to reaffirm the ANC's commitment to the values and the principles to which so many of our legends dedicated their lives", he said.
Since becoming ANC president in December‚ Ramaphosa has preached unity in the party‚ constantly saying that competing factions before the December conference should now come together.
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The last game given a definitive date was Wii U port Donkey Kong: Tropical Freeze which has been set a release date of 4 May. It follows main character Adol, lost on a deserted island and recruiting other shipwrecked passengers to fight and survive.
ANC national chairperson Gwede Mantashe called for the crowd to welcome him, to which they responded by booing.
"President Kenyatta and the Jubilee delegation are here to express fraternal relations between the people of the two countries", Ramaphosa said.
He said the two countries have a lot to share in exploitation and development of natural resources for the benefit of their citizens.
"We shall redouble our efforts to build a society in which black poverty and white privilege are consigned to the past, replaced by solidarity", Ramaphosa said.
Stressing the importance of reconnecting the ANC with the people, Ramaphosa said the organization belongs to the people of South Africa and is the Parliament of the people.
The new ANC president, Cyril Ramaphosa, addressing the annual celebration on Saturday of the party's founding.