No one can be 100% sure, but popular opinion seems to be yes, these are the same ESD's that TH2 update will use. Did you see that abbodi updated the ESD Decrypter for multi edition support.
I download this file 10586.0.151029-1700.th2_release_clientmulti_ret_x64fre_en-us_842e700779aa87c1a8ca77648d06ce1587f53013.esd and decrypt but on info is Index: 4 Name: Windows 10 Pro Technical Preview Description: Windows 10 Pro Technical Preview Is final TH2 or no.
I did the same but got this name 10586.0.151029-1700.TH2_RELEASE_CLIENTPRO-CORE_OEMRET_X64FRE_EN-US.ISO and for the info It is still not corrected by microsoft
Today is the Veteran's Day holiday here in the US, no MS employees work today. So if MS is going to release the RTM tomorrow, then I don't see they have any time to push out a new build. I think the current ESDs are RTM and I am updating all my PCs with this build.
And how do you do that? Installer now requires key and it won't accept the one from previous Windows. And without it won't continue.
Have you tried for yourself or heard it somewhere? This build is the first official build which accepts keys from 7 and 8.x. With clean install the question for the key is also skippable for HWID/DE activated installs.