About 2 weeks ago, USCIS released an updated I-751 form (and instructions). The fee ($590) is still the same. Previously, the form was one column and the instructions were two columns. Now, the new form is two columns and the instructions are one column. They flip-flopped in layout.
I much prefer the older form (it was easier to read in my opinion), but I prefer the new instructions. So, basically, I prefer the one column layout.
What's new with the I-751 form though is that it's now asking for an email address. Which might indicate something (like emailing you when they receive the package or something, who knows).
Anyways, I should be sending my own ROC package out tomorrow. I'll write up a blog post then about what I included and such.