Edit: better textures for skyrim on PC ? i would be very surprised if there will be a really noticeable difference. a little bit sharper i would guess. nothing more.
Todd said "higher res" on PC. He didn't say how high res. He said he didn't wanna go into those details. Now, to get a high res texture as well as a low res version, there are two ways that can be done.
You either...
1. make a hi-res texture from the very start. Then easily lower the resolution for the low-res version.
or you...
2. make a low-res version from the start. Then increase the resolution.
The 1. way of doing it is way way better. It's much easier to make a GOOD hi-res texture from the start than to make a GOOD hi-res texture by increasing the resolution of a low-res version. Lots of detail is lost by the low-res version, and it would require a lot more than just increase the resolution to make a GOOD hi-res texture by choosing the 2. way of doing this.
If Bethesda has done 1. way of making "higher res" textures on PC, those textures are already made long ago. Those textures would be made first, and then scaled down to low-res for consoles. My guess it isn't this way, considering what Todd said in the interview. That means a lot more work would have to be done to make GOOD hi-res texture with 2. way of doing it. My guess is that that is something Bethesda don't wanna spend much time doing, and we'll be left with bad looking textures for the PC version as well.