There won't be a hard date. No more deadlines.
My estimate (which is worth nothing, mind ya) is early October as the scale of the remaster grows. If Notty can make it earlier, great, if not, great as well, because that's what it will be regardless.
It really depends on the preferences. I would recommend it immediately to anyone who cares the most about the quality of the story, writing, characters, humour, choice based gameplay...etc. This is a gem not to be missed.
But to those for whom render quality or lewd content are priority, I would advise to wait. First impression matters and with the remaster it is sure to be better.
As for the charm of the old renders? I don't think that is much of a factor for a new player, if there are only two or three weeks (for example) left until the remaster. I've been here for over eight months, you for two months (if I'm not mistaken). We've had time to grow attached to it so to speak.