TwistedVoxel reports that the update expands Tekken 8's roster with support for Roger Jr. as a playable character. The same report identifies the release as update 3.03.01.
The update is also reported to include TEKKEN Fight Pass Round 12 and several new customization items. The supplied report does not identify or enumerate those items.
TwistedVoxel additionally describes the update as containing extensive character fixes, but the available material does not provide the full list or details. No official Bandai Namco announcement or complete official patch notes were supplied, so the exact release time and regional availability remain unestablished.