I just finished installing the ud3p rev 1.6. So far the OC settings and limits are the same as my rev 1.0. I was hoping to get that extra 100mhz but i just cant do it. My poor quad wont pass stability tests over 4400mhz. The only thing different that i've found is the 1.6 wont boot with 8gb of pi 9600 at the default 1.8 volts. 4gb boots fine. I've gotta up the voltage then install the other 4gb and all is good. I'll let you all know if i find anything else different.
Oh and if anybody needs the F10e (1.0,1.1 rev.) or the FDa (1.6 rev) bios with SLIC tables added let me know and i'll send them or post a link. I've used both for Windows 7 Ultimate RTM activation and they work perfect.