New
#610
Nothing is going to be merged just yet. That announcement was just a warning, so people have time to adjust their insider settings.
We already know that 16299.15 is the RTM build, so now it is a good time to decide if you want to stay on this build and get only GA security and BUG patches, be in the release preview for some prerelease patches and Store Apps or continue onward to RS4 prereleases.
If you want to wait a bit longer for RS4 prereleases, just select Slow Ring, but if interested in fast paced upgrades coming in then select Fast Ring or just stay on Skip Ahead, which will be the same as Fast Ring in it's core except for also having latest Store Apps.
I did put my main insider machine on Release Preview ( FCU ) and will keep my other machine ( CU ) on Release Preview as usual. In Hyper-V I will be on both Fast Ring and Skip Ahead.
I know all that, but my point was I suspect a lot will get caught out - not everybody follows twitter or web forums etc.
It seems to me waiting at least until 17th would not be a bad idea, as that is when may Insiders may NATURALLY choose to change their status. Even going on Slow Ring will only defer change. It would not affect me as I always keep regular image backups, but unfortunately not all people do (dumb if an Insider).