by the sounds of it Andy has found far superior beta on the bottom crux section whereby you can now get the crux pocket static, which means that the sitter will be incredibly doable now and the stand up is piss, Andy has also found a better sequence on the top by going slightly out right away from the arete, which is something i have done before as i warm up on that section of wall so its probably worth forgetting my version of keeping to the arete as it is clearly pretty contrived now, That said the line also goes on the LHS to the top the moves are basic and obvious and i've done all but one of them. So this opens up the potential of climbing the whole line on its LHS.
I'd estimate that this is probably soft 8a now if the move to the pocket is at all more reliable as it was the only really hard move on the problem.
That said the sitter into this will now be an amazing 8a+ish line
and the LHS all the way will be an amazing 8b/+ish and the true 'line'.
goes to show how hard it is to find lines which are geniunely hard which force a hard sequence which isn't duff. Especially on sandstone
Watson made the 2nd ascent of Red Dragon too, which is also a good effort and well worth a mention.