The same as I said it was - 3 to 4 times more powerful. 4 times the RAM, more than 3 times the eDRAM on the GPU, the eDRAM is on-die, the GPU has a DX11 equivalent feature set, the GPU has a feature that allows developers to save memory on textures meaning it doesn't need to have as much throughput (FLOPs) as other GPUs (and that's patented), it has an ARM 11 co-processor, the main CPU has 3MB of eDRAM cache (again, on-die) as opposed to 1MB on the Xenon, it has an Out of Order Execution CPU, it has a DSP and dedicated silicon for IO processing.
Nothing has changed, it's still 3-4 times more powerful than the 360.
And the RAM, despite being DDR3 (which the PS4 and 720 are also likely to have as I've previously mentioned), has very low latency. Nintendo have always released balanced systems and the Wii U won't be any different. You'll have the 720 (the most powerful of the two other next gen consoles) being three times more powerful at the most which is in the same sort of ballpark in terms of power
There's a lot more going on under the hood than a simple teardown will reveal, particularly with the RAM and GPU. Developers are very happy with it so far, the only reasons why the ports aren't great is because of the different architecture compared to the PS3 and 360 and that the ports have been rushed to make launch. And those performance issues that have been reported should be fixed with a patch or two during the next week or so. It's not as if any single PS3 or 360 game has ever been perfect out of the box lol