According to http://www.scedev.net/blu-ray/ it enables
- Capability to play BD-ROM master images on BD-R/RE
- Region changing capability (supports changing between BD region A/B/C)
- Switching HDCP On/Off
These capabilities would be interesting for common users as well. It would also suggest that BR drive region lock is firmware-based only - can any dev confirm? Is anybody having access to such system?
Also what I would be interested is playing DVDs from other regions (I own some) as well as PS2 games from other regions (I have European PS2 compatible PS3 and accidentally bought some US PS2 games that I'd love to play).