I will doubt 30% CPU wise. I can see GPU wise.
I don't think the GPU will be the next gen but a refresh of the HD6K series, still VILW4 not MIMD as only the ones that I think will actually use the MIMD is the HD79XX series. I also think that the Trinity GPU will be the HD7K equivalent to current Llano GPUs but will allow for higher clocks in some way.
The entire HD7K series, apart from the HD79XX, will be a die shrink of Cayman Islands but have higher clocks thanks to the 28nm process. Look at the rumored specs of the HD7870. Exact same specs as the HD6970, same sharder amount, GDDR5, 2GB but higher clock speeds for the core and memory, thanks to about a 100W drop, to allow for a slight performance boost.
The HD7970 on the other hand will be MIMD, 2GB of XDR2 @ 8000MHz, 1000MHz core, 2048SPUs and a 512Bit memory interface (reminds me of the HD2900).
It will also more than double the GPixels/s fill rate (64 vs 28.2) and increase the GTixels/s by 50% (128 vs 84.5). As well it will boast a whopping 338.2 GB/s memory bandwidth vs 176GB/s (almost double). Hell its more powerful in almost every area than the HD6990 except GTixels/s (159.2) which means we could possibly have another HD5870, a card that performed the same as a HD4870X2 for the most part but it could possibly beat the HD6990.
All that aside, thats why I don't think Trinity will be as big a jump as they say it will.