I have 10.9 (DP2) installed on an extra iMac and was thinking about installing (at some point) on my main Mac. I noticed this statement in my Apple email that has me concerned about instilling a future release. "You will need to have build 13A476u (DP1) installed in order to see the Mac App Store Software Update...". Will I still be able to install DP2 (or DP3) on my Mac over ML or have I missed the boat? Or can I still (now and in the future) install DP1 and then install DP2 (or DP3)?