Well, it's a tiny rumour thingie, but according to Kotaku.com, Microsoft may announce something about the Live Anywhere project tomorrow at the MS GDC keynote.

Editor Brian Crecente believes that this mobile integration into Xbox Live could be tied to big games like Bioshock. A mobile version of Bioshock was announced a few days ago.

Bioshock was indeed a big title for Microsoft, but you surely need to take this with a massive grain of salt.

Kotaku.com - Our best guesses for Microsoft's GDC keynote