After research and studies conducted by the Brazilian Navy (MB), the future Antarctic Support Ship (NApAnt) had its name chosen: “Almirante Saldanha”. TheNApAntwill reduce the refueling time of the Comandante Ferraz Antarctic Station (EACF), due to cranes with greater load and maneuverability, and will be better equipped for the launch of camps and will have greater autonomy to expand support for research.
The new ship will replace the Oceanographic Support Ship “Ary Rongel” and will have more modern technical resources such as the navigation and control system, which will allow closer approach of the ship to the beach for landing personnel and material, safely.
There is no indication that the ship is an icebreaker, but it will certainly be ice strengthened. According to Janes, the ship will be delivered in 2025 and,
“The ship will displace approximately 5,880 tonnes for a length of 93.9 m, a width of 18.5 m, a draught of 6 m, cruising speed of 12 kt, endurance of 70 days, and a crew of 95, including 26 researchers.”
This is the ship being replaced:
Oceanographic support vessel ‘Ary Rongel’. Marinha do Brasil picture
Chuck Hill's CG Blog 
The Royal Navy needs something to replace Protector. I can’t see it happening. All I can is the task being withdrawn just as everybody else is requipping with better hulls.
The new Brazilian vessel will be strengthened to Polar Class 6 level. While it will not have icebreaking capability, it can still safely bump into medium first-year ice in the marginal ice zone during the summer-autumn period.
@Tups, Thanks, knew I could depend on you to fill in the gaps in the specs.