The Arena grants both races their own respawn
point marked as a red zone in the map called the ‘Safe Zone’.
To encourage raiding each other’s bases and engaging more
in PVP battles,the Arena Safe Zone now deals a 15% damage
every 3 seconds upon entering the enemies base.
Previously, the damage caused when entering an enemies
Safe Zone was too high, preventing PVP’s as each race
was too vulnerable in entering another race’s safe zone.
At the Safe Zone, each race can now also obtain a
health regeneration of 15% every 3 seconds at their
own respective bases. This allows both races to defend
themselves and stand their ground at their own bases
when they are being pushed beyond their limits by their opponents.
Forum discussion
https://forum.warfareonline.net/t/season-11-update-8-arena-safe-zone-update-beta/2883