Representatives of Sackville Developments - a joint venture between Benson Elliot and Stanhope - will also be at the exhibition to answer questions.
The proposed development includes a mix of offices, apartments, shops, restaurants, cafes, leisure facilities and car park. It also involves the demolition of the disused Friars Walk shopping centre and Western Tower.
Benson Elliot and Stanhope spokesman, Ben Johnson, said: "We have been working with the council on this new scheme for Station Hill over the last 11 months or so and now very much look forward to sharing our draft proposals with everyone this weekend.
We hope that lots of people who live or work near this important site can attend the exhibition and give us some feedback."
LaSalle Investments are working up new proposals for the demolition and replacement of Thames Tower, and Sackville Developments has pledged to working closley with the company to ensure the two developments complement each other.