If your choices are between Sony and Canon only, there are more modern choices available in the Sony models. The Sony equivalent to the G30 is the CX900, they are roughly the same price and have a very similar form factor. Personally I prefer the Canon ergonomic over the Sony version, but the difference is not massive and tastes vary. Both are HD cameras, but the Sony has considerably better image quality and capability. For about $500 more you can get the big brother, namely the Sony AX100.
Canon did not release a real update for their cameras this year. They did release semi-professional variants of the G30, but all the inside parts (sensor, lens, processor, etc) are exactly the same.
If you are in the market for something like a new G30, I would recommend the CX900 instead (and I own a G30, so this is not fanboy talk).
Last edited by Tugela; 06-19-2014 at 01:18 PM.
Reason: Crappy implentation of editing functions in the composition window