If you "reserve" Windows 10, prior to July 29 MS will begin loading a version of Windows 10 onto your PC. Then it will continue to update that version until it is ready and then will notify you on July 29 that you have the latest version and you can update. That way there is no mad dash on July 29 to start a download. As for AV programs, I am testing a Beta of Norton Security v22.5 for W10 compatibility and Norton has said that NIS v21 will be updated for Windows 10 in a few weeks.
I think when the final release comes out I'll drop out of the preview program and go with the main. While it's been fun being in the TP at this point I want to just live with Win10.
Hoping they are going to do it similar to how it works on the phone, run the insider app and say enrol me, then you get updates quicker, not having to do any re installs unless you want to (got win phone 8.1 about 6 months before general release and had no issues with it)
I disagree that only gamers will want Windows 10. I'm not a gamer, except for playing Solitaire at the end of the day in order to unwind. I'm sure that, among the millions of Windows 10 Insiders, I won't be the only non-game player who'll upgrade.
I'm ambivalent on whether the Control Panel should stay or go . . . At first, Settings was eating my lunch and I couldn't find anything, but as time goes on and I go in there first, I find myself adapting. As far as "ease of use" Settings is far more convenient than the Control Panel.
Right now, I have an HP Wide Bed printer that's essentially useless! I'm hoping against hope that there'll be drivers for it because that thing cost a few extra bucks!
Remember the current builds don't expire until OCTOBER so you've got plenty of time to decide how you want to run W10 even AFTER Jul 29. You don't have to update before then anyway -- if you've already registered for an update simply IMAGE your W7 / W8.1 systems and run W10 preview / these builds until you are ready for "The real thing". The update will work for ONE YEAR after jul 29 in any case provided you've registered - so simply restore W7 / W8.1 image when ready and go for it.
I've got on the whole a reasonably working build (100130) so I'll wait until the initial REAL releases of W10 have been rolled out and see what happens --I'm sure some errors will appear which I'll let the early adopters fix.
Why would you want to run the preview build once the final is out?