Galaxy S3 is a good phone, but not perfect and it's understandable why the OP would want to hold off on the S3 for the new Nexus phone.
To answer the question, no, there's no news about the next Nexus phone. Just rumours like it'll be made by multiple manufacturers and what not.
I'm not entirely convinced that there will be a Nexus phone 2012 model. Nexus devices are typically released with new Android software versions (2.1 Nexus One, 2.3 Nexus S, 4.0 Galaxy Nexus, 4.1 Nexus 7) so I'd assume if Google were to release a new Nexus phone, it would coincide with a new software version (4.2 Key Lime Pie?), which I'm not convinced we'll see this year.
Maybe they'll take a different approach and release a Nexus phone with no new accompanying software, but I'd like to think not.
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